if 14.2 g of al(no3)3 is dissolved in 655g of water, what is the boiling point of the solution (assume 100% dissociation, kb (h2o)

The salinity of seawater in the world's oceans is typically 3.5% or 35 parts per thousand. This indicates that there are 35g of dissolved salts in every 1lit of salt water, the majority of which, but not totally, is NaCl.

The saltiness or quantity of dissolved salt in a body of water is known as salinity (see also soil salinity). It is often measured in grammes per litre (g/L) or kilogrammes (g/kg; the latter is dimensionless and equal to ).

Salinity, a thermodynamic state variable governed by temperature and pressure, along with other physical properties like density and heat capacity of the water, plays a significant role in regulating many aspects of the chemistry of natural waters and biological processes occurring within them. Conceptually straightforward but technically difficult to describe and quantify properly is salinity in rivers, lakes, and the ocean. Conceptually, salinity refers to how much-dissolved salt is present in the water.

Learn more about salinity here:

https://brainly.com/question/14575146

#SPJ4

Naomi has increased the pressure on a solution of liquid and gas in a closed container, This will increase the amount of gas held in her solution.

When Naomi raises the pressure on a closed container containing a solution of liquid and gas, the result will be an increase in the volume of gas that is contained within the solution.  Gases dissolve better under pressure.  In the beginning, the particles that make up the gases were very far away from one another.

They move around randomly and never stay in the solution.  An increase in their pressure causes the gases to collide with the solution more frequently.  Because of this, the amount of gas that may be contained in a solution will increase.

You can also learn about ideal pressure from the following question:

https://brainly.com/question/12971272

#SPJ4

For each of the given salt preparations, the method and additional reagent needed for the preparation as well as the complete equation of the reaction is given below:

(i) The soluble salt copper (II) sulfate, from the insoluble base, copper (II) oxide:

Method: add an excess of base or metal to dilute acid and remove the excess by filtration

Reagent: copper (ii) oxide and sulfuric acid

Word equation: copper (ii) oxide + sulfuric acid --> copper (ii) sulfate + water

(ii) The soluble salt, potassium chloride, from soluble base potassium hydroxide;

Method: use a burette and indicator;

Reagent: potassium hydroxide and hydrochloric acid

Symbol equation: KOH + HCl ---> HCl + H₂O

Salts are compounds that are formed when all or some of the ionizable hydrogen of acids are replaced by metallic ions.

Depending on the nature and solubility of a salt, there are three methods of preparing salts.

Method A-- use a burette and indicator; for soluble salts

Method B----mix two solutions and obtain the salt by precipitation; for insoluble salts

Method C-  add an excess of base or metal to dilute acid and remove the excess by filtration; for soluble salts.

Learn more about soluble and insoluble salts at:  https://brainly.com/question/15596863

#SPJ1

sp³ Hybridization is present when the bond angle between two adjacent hybrid orbitals is 109.5°.

The process of combining the characteristics of one 2s orbital and three 2p orbitals to produce four hybrid orbitals with similar properties is known as "sp³ hybridization." An atom needs an s orbital and three p orbitals in order to be sp³ hybridized. Electron repulsion is decreased in this configuration. Four sp³hybrid orbitals are produced when one s orbital is hybridized with all three p orbitals. The binding angle between the sp³ hybrid orbitals is 109.5 degrees. The stronger the connection, the shorter the bond, and the closer the electrons are bound to the nucleus, the higher the s-character. In comparison to sp² and sp hybridized atoms, sp³ hybridized atoms thus form longer and weaker connections.

Hence, option c. sp³ is the correct answer.

If you want to learn more about hybridization visit the link which is given below;

https://brainly.com/question/14140731

#SPJ4

The energy storage molecule that is produced when food is broken down during the cellular respiration process is ATP molecule.

The Cellular respiration is a metabolic pathway that generally breaks down glucose molecules and produces ATP. The stages of cellular respiration basically includes glycolysis, pyruvate oxidation, the citric acid or Krebs cycle, and oxidative phosphorylation etc.

Cell respiration usually consists of three steps that is glycolysis, the Krebs cycle, and the respiratory electron transport. The first step by which cells make the ATP from food is called glycolysis. For example Imagine eating a donut. The starches and sugars of the donut are generally converted to glucose that is blood sugar, in your mouth and stomach by digestive the enzymes.

During the cellular respiration, glucose is usually broken down in the presence of oxygen in order to produce carbon dioxide and water. Energy released during the reaction is usually  captured by the energy-carrying molecule ATP (adenosine triphosphate).

To know more about cellular respiration process

https://brainly.com/question/29760658

#SPJ4

A trigonal structure with an ideal bond angle of 120° results from a structure with a central atom with three electron groups.

A triangular planar molecule is a molecule with three bonds and an O lone electron pair. A molecule is angular if it has three bonds and one lone pair of electrons. A tetrahedral molecule is a molecule that contains four bonds and no lone pairs. A molecule is a triangular pyramid if it contains four members and a pair of electrons.

If a structure has four atoms, none of which are lone pairs, and the core atom is surrounded by three other atoms, the structure has a trigonal molecular structure. Four atoms are arranged in one plane.

For more information about Trigonal Planner,:

https://brainly.com/question/29366994

#SPJ4

Answer:

C is the answer

0.1907% error

When a lead storage battery is discharged, metallic lead and lead(iv) oxide are involved then  anode is  Pb and  cathode is PbO (lead Oxide).

A metal is any of a group of substances with high thermal and electrical conductivity, malleability and ductility, and high light reflectivity. Metals make up roughly 75% of all chemical elements that are currently understood. In the Earth's crust, aluminium, iron, calcium, sodium, potassium, and magnesium are the most prevalent elements. Some metals, such as copper, gold, platinum, and silver, are frequently found in the free state, though, as a result of the fact that they do not easily react with other elements. Ores contain the majority of metals (materials that contain minerals). Typically, metals are crystalline solids. They typically have a highly symmetric crystal structure with a compact atom packing that is simple to understand.

To know more about  metal visit : https://brainly.com/question/1349130

#SPJ4

There is a golden role of solubility, polar solute dissolve in polar solvent and non polar solute dissolve in non polar solvent. Therefore, the solution to be saturated the mass of salt must be greater than 36.0 g.

Solutions are a homogeneous mixture of two or more substances. A solution is a homogeneous mixture of solvent and solute molecules. Solvent is a substance that is in large amount in solution. solute is the substance which is in small amount in a solution.

The solubility of sodium chloride in water is 36.0 g per 100 g of water. which means that sodium chloride solution will contain 36.0 g of dissolved salt for every 100g of water. The solution will be unsaturated because of the less potassium nitrate. The solution to be saturated the mass of salt must be greater than  36.0 g.

Therefore, the solution to be saturated the mass of salt must be greater than  36.0 g.

To know more about solution, here:

https://brainly.com/question/13812915

#SPJ1

The concentration of the solution rises as more and more solute is dissolved in the solvent. The osmotic pressure of the solution rises with the increase in solution concentration. As a result, solution has a higher osmotic pressure than pure solvent.

The quantity of solute particles in a solution affects the osmotic pressure of that solution. The amount of solute particles in a liquid is directly proportional to the osmotic pressure, hence the higher the osmotic pressure, the more solute particles there are in the liquid.

Temperature and concentration both have an impact on osmotic pressure. Temperature and solute concentration both have an impact on how much pressure is produced.

Learn more about osmotic pressure refer

https://brainly.com/question/25904085

#SPJ4

The number of moles of a component divided by the sum of the moles of all the components in a mixture is known as the mole fraction mf = na/nm applies to a two-component mixture.

The difference between na and nm is the number of moles of each component in the combination.

Given a mixture of gases with moles equal to 1.20 mol and molecules of nitrogen (n2) at 0.5 mol,

This mixture's mole fraction of n2 is =  0.5/1.2 = 0.40.

As a result, mole fraction is 0.40.

To learn more about mole fraction click here https://brainly.com/question/8076655

#SPJ4

The predominant type of intermolecular force in each of the following compounds is as follows:

a. CHF₃CHF₃ - Dipole-dipole forces

b. OF₂OF₂ - Dipole-dipole forces

c. HFHF - Hydrogen bonding

d. CF₄CF₄ - Dipole-dipole forces

Intermolecular forces are forces that exist between the molecules of a substance.

The main intermolecular forces in compounds are as follows:

The predominant type of intermolecular forces in compounds depends on the nature of the molecules of the compound.

London dispersiosDipole-dipole forces and hydrogen bonding predominate in polar covalent molecules, whereas ion-dipole forces predominate in polar ionic compounds.

Learn more about intermolecular forces at: https://brainly.com/question/12243368

#SPJ1

Answer:

CHF3: Dipole-dipole

OF2: Dipole-dipole

HF: Hydrogen bonding

CF4: London

Explanation:

The order of strength for intermolecular forces from greatest to least is as follows: Hydrogen bonding, dipole-dipole, London dispersion

This means that if a compound has hydrogen bonding, that is the dominant intermolecular force. If a compound has no hydrogen bonding but has dipole-dipole force, then the dominant intermolecular force is dipole-dipole. London dispersion forces, although exist in all compounds, are the weakest of the above forces and are only the dominant intermolecular force when neither of the other forces exist.

To determine if hydrogen bonding exists, you must look at the structure and see if bonds between hydrogen and either nitrogen, oxygen, or fluorine exist (H-N, H-O, or H-F). Out of the 4 compounds listed, the only one that has one of these bonds HF.

To determine if dipole-dipole forces exist, you must determine if a molecule is polar first. A molecule is only polar when at least one bond that makes up the molecule is polar and polar bonds don't 'cancel each other' due to the molecular shape. Of the remaining compounds, OF2, HF, and CF4 all have polar bonds. However, the shape of CF4 is symmetrical and thus the bonds cancel each other. Therefore, only OF2 and HF have dipole-dipole forces as their predominant intermolecular force.

Since CF4 does not have hydrogen bonding or dipole-dipole forces, the predominant type of intermolecular force for CF4 is London dispersion force.

Among the following, whiskey contains more alcohol.

What is alcohol?

Most beverages include alcohol, which is what makes you intoxicated. Alcohol found in beverages is known as ethanol (ethyl alcohol). It is created when the carbohydrates in grains, fruits, and vegetables are fermented by yeast.

Therefore, whiskey contains more alcohol.

To learn more alcohol from the given link.

https://brainly.com/question/947751

#SPJ4

Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore, the most likely chemical formula of the compound is SO[tex]_3[/tex]. Ideal gas is a hypothetical gas.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature. There is no force of attraction between the particles.

Mathematically the relation between Pressure, volume and temperature can be given as

PV=nRT

where,

P = pressure of gas sample = 1 atm

V= volume of gas sample = 0.5 L

n =number of moles of gas sample=?

T =temperature of gas =298K

R = Gas constant = 0.0821 L.atm/K.mol

Substituting all the given values, we get

1atm× 0.5 L =n× 0.0821×298

On calculation we get

0.5=n×24.4

0.020 = n

molar mass = mass /moles

molar mass = 1.636 /0.020

                   = 80g/mol

Therefore, the most likely chemical formula of the compound is SO[tex]_3[/tex].

To learn more about ideal gas equation, here:

https://brainly.com/question/14826347

#SPJ1

The extra R group will likewise dissociate after protonation of the group, followed by deprotonation of the carboxylic acid group.

Alpha-amino acid glutamic acid has the chemical formula C₅H₉O₄N

In biochemistry, it is frequently abbreviated as Glu or E. Its idealized chemical structure is HOOC-CH2COOH, which has two carboxyl groups (-COOH) and one amino group   When this acid is at its isoelectric point and in an acidic media, it has a protonated NH₃⁺  group.

The deprotonated COO⁻, a carboxylic acid group, is present in basic and at its isoelectric point.

This is the acid's zwitterion. A zwitterion is a substance that lacks an overall electrical charge but has discrete positively and negatively charged components. Deprotonation of the carboxylic acid group occurs after protonation of the group.

Finding the isoelectric point using the pKas is as follows: pKa1+pKa2+pKa3 =2.19+9.67+4.253=5.37

This leads to the expectation that the solution will be positive at pH=1, negative at pH=7, and potentially chargeable at pH=13.

pH = 1

Knowing that the solution will be acidic at pH = 1,

Let's ascertain the response. also in this

2Azaniumylpentanedioate, often known as glutamate monoanion, is its IUPAC name.

Total charge=COO⁻+ NH₃⁺+ COO⁻

=−1+1−1

=−1

pH = 13

Because as soon as the  COOH dissociates to give H⁺ it immediately becomes H₂O because of  increased presence of OH⁻ in basic solutions. This is commonly known as glutamate(2‐) or glutamate dianion but the preferred IUPAC name is 2‐aminopentanedioate

Total charge=

COO⁻ +COO⁻

= -1−1

=−2

To know more about pka values, please refer:

https://brainly.com/question/13608171

#SPJ4

During the spontaneous process of heat being transferred from colder to hotter bodies, the entropy of the system of bodies increases.

A lower value indicates higher quality, and entropy is a measure of energy quality. Energy with a lower entropy is neatly ordered energy. High entropy is the result of chaotic energy storage.

Entropy is always rising because every particle and atomic structure travels faster than light through space and time. Expressions with inequalities are produced by the second law of thermodynamics. Since entropy cannot be destroyed in any way or at any size, it cannot generally increase. Everywhere and always, entropy is produced, increasing total entropy at any scale, including entanglement, open systems, micro-fluctuations, gravitation, and life processes.

To know more about entropy, visit:

https://brainly.com/question/24278877

#SPJ4

If the bond angle between two adjacent hybrid orbitals is 109.5°, the hybridization is sp³.

In sp³ hybridization the bond angle is 109.5° and the arrangement of the molecule is tetrahedral. in  sp³ hybridization then carbon atom is bonded with the four other atom. in the  sp³ hybridization one s orbital and the three p orbitals in the same shell of the atom will combine to form the four new equal hybrid orbitals . the example of the  sp³ hybridization is the methane , CH₄.

Thus, in the  sp³ hybridization the bond angle between two adjacent hybrid orbitals is 109.5° and the molecular geometry is the tetrahedral geometry.

To learn more about hybridization here

https://brainly.com/question/29727424

#SPJ4

The conserved in the reaction shown :

N₂(g) + 3F₂(g)     ---->  2NF₃(g) is the mass is conserved.

According, to the law of conservation of mass : the mass neither be created nor be destroyed.

N₂(g) + 3F₂(g)     ---->  2NF₃(g)

the mass of N₂ = 28g

the mass of 3F₂ = 114g

the mass of 2NF₃ = 142 g

N₂(g) + 3F₂(g)     ---->  2NF₃(g)

28 g        114 g                   142 g

28 g + 114 g = 142 g

142 g = 142 g

Thus, the mass of the reactant is equal to the mass of the product. the equation follow the law of conservation of mass as the mass of the reactant is equal to the mass of the product.

To learn more about law of conservation here

https://brainly.com/question/26078627

#SPJ4

The rank from highest to lowest boiling point is given below

Greatest -> Least

1) paraffin, C25H52

2) hexadecane, C16H34

3) octane, C8H18

4) 2,2,4-trimethylpentane, C8H18

5) propane, C2H8

The boiling points point is the temperature at which the vapor pressure is equivalent to the average atmospheric pressure at sea level. A liquid's boiling point changes depending on the pressure that is applied (760 mm [29.92 inches] of mercury). Water boils at 100° C (212° F) at sea level.

Therefore, based on the above, from highest to lowest point, the hydrocarbons are: paraffin, nonadecane, pentane, 2, 2-dimethylpropane, and propane.

Learn more about boiling point from

https://brainly.com/question/40140
#SPJ1

See full question below

Place these hydrocarbons in order of decreasing boiling point. Rank from highest to lowest boiling point. To rank items as equivalent, overlap them.

hexadecane, C16H34

paraffin, C25H52

octane, C8H18

2,2,4-trimethylpentane, C8H18

propane, C2H8

Answer:

Explanation:  Answer and Explanation: In a battery operated flash light, the energy conversions which take place are: chemical energy is converted to electrical energy and then the chemical energy is converted to light energy.

2NaOH + H2SO4 → Na2SO4 + 2H2O is a Neutralisation chemical reaction in which acid and base react to each other to form salt and water. Sodium hydroxide is an strong base which is also known as caustic soda. The chemical formula of sodium hydroxide is NaOH and Sulphuric acid is strong acid with chemical formula H2So4.

In chemistry, Neutralisation is a chemical reaction in which acid and a base react quantitatively with each other. In a reaction in water, neutralization results in there being no excess of hydrogen or hydroxide ions present in the solution.

When Both H2So4 and NaOH combine, the  acid-base reaction will occur. Sodium hydroxide is a base that reacts with an acid, i.e., sulfuric acid to give respective salt and water as the product where Sodium sulphate is salt as a product . The reaction is an example of a neutralisation reaction.

To know more about Neutralisation reaction visit here ; brainly.com/question/23008798?referrer=searchResults

#SPJ4

In 100 ml of 0.15 m nitrous acid (HNO₂) are titrated with a 0.15 m naoh solution. pH for the initial solution is 2.04,  The pH for the point at which 80.0 ml of the base has been added is 3.85, pH for the equivalence point 8.06, and  ph for the point at which 105 ml of the base has been added is 11.56.

The nitrous acid reacts with NaOH as follows because it is a weak acid (Ka = 5.6x10⁻⁴):

HNO₂ + NaOH (l) = NaNO₂(aq) + H₂O

a. At first, there is only a 0.12M HNO₂ solution. As Ka is:

Ka = [H⁺] [NO₂⁻] / [HNO₂]

In the case where [H⁺] and [NO₂⁻] ions  originate from the same equilibrium ([H⁺] = [NO₂⁻] = x)

5.6x10⁻⁴ = X² / 0.15M

8.4x10⁻⁵ = X²

X = [H⁺] = 9.165x10⁻³M

As pH = -log [H⁺]

pH = 2.04

b. We currently have a buffer made up of HNO₂ and  NaNO₂ (the weak acid and conjugate base). The H-H equation is used to determine a buffer's pH:

pH = pKa + log [NaNO₂] / [HNO₂]

Where pH is the pH of the buffer,

pKa is -log Ka = 3.25

And [NaNO₂] [HNO₂] could be taken as the moles of each compound.

HNO₂  initial moles are as follows:

0.100 l x 0.15 mol/l. =0.015 moles

The additional moles of base are:

0.0800L x 0.15 mol/L = 0.012 moles

The moles of base added = Moles of NaNO₂ produced = 0.012moles.

The remaining moles of HNO2 are as follows:

0.015moles - 0.012moles = 0.003moles

Replacing in H-H equation:

pH = 3.25 + log [0.012moles] / [0.003moles]

pH = 3.85

0.15M / 2 = 0.075M

The NaNO₂ is in equilibrium with water as follows:

NaNO₂(aq) + H₂O(l) ⇄ HNO₂(aq) + OH⁻(aq) + Na⁺

c. All of the HNO₂ interacts at the equivalence point to produceNaNO₂. NaOH must be added in 100mL increments. Therefore, the NaNO₂ concentration is:

The equilibrium constant, kb, is:

Kb = Kw/Ka = 1x10⁻¹⁴ / 5.6x10⁻⁴ = 1.79x10⁻¹¹ = [OH⁻] [HNO₂] / [NaNO₂]

Where [OH⁻] = [HNO₂] = x

[NaNO₂] = 0.075M

1.79x10⁻¹¹ = [X] [X] / [0.075M]

1.34x10⁻¹² = X²

X = 1.16x10⁻⁶M = [OH⁻]

pOH = -log [OH-] = 5.94

pH = 14-pOH

pH = 8.06

d. The moles are now added an excess of 5 mL of NaOH, and they are:

5mL = 5x10⁻³L * (0.15mol / L) =7.5x10⁻⁴moles NaOH

In 100mL + 105mL = 205mL = 0.205L. [NaOH] = 7.5x10⁻⁴moles NaOH / 0.205L =

3.66x10⁻³M = [OH⁻]

pOH = 2.44

pH = 14 - pOH

pH = 11.56

Learn more abour pH at https://brainly.com/question/1195974

#SPJ4

The mixing of the two chemicals results in changes in the chemical properties and the arrangement of the atoms in the chemicals.

The atoms of the starting substances are turned into the atoms of the finishing substances as the initial substances combine and transform into new compounds. The atoms of the starting substance get mixed with the other substance resulting in changing the physical and chemical properties of the substance.

In chemistry, a mixture is a compound made up of two or more simpler substances. Chemical elements or compounds may qualify as such materials. A combination of liquids, solids, or gases can be created. When sugar is added to water, for instance, it first creates a mixture before dissolving to produce a solution.

To know more about the result of the mixing substance, refer to:

brainly.com/question/25914535

#SPJ1

The expected product of the curved‑arrow mechanism the reaction mechanism is given below.

A curved arrow mechanism:

what is it?

Nonlinear, curved arrows with barbs on one end are used to represent electron flow. A single-barbed arrow denotes the motion of a single electron, whereas a double-barbed arrow denotes the motion of an electron pair.

curved‑arrow mechanism

[tex]< smiles > CC1CCC(C#N)(C#N)C1 < /smiles > $\stackrel{\mathrm{SN} 2}{\longrightarrow}$ < smiles > CC1CCC(C#N)C1 < /smiles >[/tex]

[tex]OTs < smiles > CC1CCC(C)C1 < /smiles > $\mathrm{NACN} \longrightarrow$DMSO[/tex]

An electron source is where the arrow is drawn (a bond or a lone pair). In other words, the bent arrow's tail indicates the origin of the electrons. The direction of the electrons is indicated by the arrow. The motion of two electrons is depicted by a double-barbed arrow.

To learn more about curved arrow mechanism visit:

https://brainly.com/question/9611684

#SPJ4

half-cell A houses the anode. 0.038V is the voltage of the cell.

what is anode and cathode?

An electrochemical reaction occurs when the anode, which is the negative or reducing electrode, oxidises and releases electrons to the external circuit. The cathode, also known as the positive or oxidising electrode, is reduced during the electrochemical reaction after receiving electrons from the external circuit.

Half-cell A: 2H + 2e ⇒ H2(0.95atm, 0.10MHCl)

Half-cell B: 2H + 2e ⇒ H2(0.60atm, 2.0MHCl)

As the anode has a negative charge, oxidation occurs there. B is positive and electrode in A is consequently negative.

The solution that is more diluted in a concentration cell is found in half cell A, which serves as the anode.

The resulting cell reactions are as follows:

Anode: H2 ⇒ 2H +2e;(0.95atm,0.10MHCl)

Cathode:2H +2e ⇒ H2 ;(0.60atm,2.0MHCl)

Half-cell reaction H(aq.2.0M)[Half cell B]   ⇒  H(aq. 0.10M) [Half cell A]

Ecell= E°cell - 0.0592/n ㏒ Q

       =        0 - 0.0592/2 ㏒ [H dil /H conc]

       =   -0.0592/2 ㏒ 0.01M/2.0M

       =   -0.0592/2 × (-2.3)

       =    0.0385 V

Anode; Half-cell A

E cell = 0.038V

To learn more about anode https://brainly.com/question/17109743

#SPJ4

0.1M NaCl is breaking down at cathode and bubbles at anode, 0.1M NaBr is bubbling at cathode and turns yellow at anode, 0.1M NaI is make bubbles at cathode and turns yellow at anode, 0.1M of AgNO₃ is forming silver at cathode and make bubbles at anode, 0.1M of CuSO₄ is turned red or orange at cathode and make bubbles at anode, 0.1M CuSO₄ is gained copper at cathode and no reaction occurs at anode.

(1) When 0.1M NaCl is present in between two graphite electrode, cation Na⁺ and H⁺ comes to negative electrode cathode for reduction.

Thus as reduction potential of H⁺ is greater than Na⁺, thus H₂O is easily reduce to cathode and forming huge bubbles of H₂ gas as large amount of water is present near cathode.

Cathode reaction : 2H₂O + 2e⁻ → H₂ + 2OH⁻          

The positive anode attracts the negative H⁺ and Cl⁻. Only the chloride ion is discharge in appreciable amount i.e. Cl⁻ is oxidize to Cl₂ at anode. Thus a little bubbles comes out.

Anode reaction : 2Cl⁻ → Cl₂ + 2e⁻

(2) When 0.1M NaBr is present in between two graphite electrode, cathode reaction is reduction of H₂O producing H₂ gas bubbles.

Anode reaction is oxidation of Br⁻ to Br₂ pale yellow color.

Cathode : 2H₂O + 2e⁻ → H₂ + 2OH⁻

Anode : 2Br⁻ → Br₂ + 2e⁻

(3) When 0.1M of NaI is placed in between two graphite electrode, at cathode reduction of H₂O takes place forming bubbles of H₂ gas.

And at anode oxidation of I⁻ to I₂ takes place as oxidation potential of E°(I⁻/ I₂) is greater than E°(OH⁻/O₂,HO₂).

Cathode : 2H₂O + 2e⁻ → H₂ + 2OH⁻

Anode : 2I⁻ → I₂ + 2e⁻

(4) When 0.1M of AgNO₃ is added in between two graphite electrode, silver is deposited at the cathode, as E°(Ag⁺/Ag) = +0.80 v is greater than E°(H⁺/H₂) = 0.0 v. Thus Ag⁺ is easily reduces to cathode and silver is formed at cathode.

And at the anode H₂O molecules discharged and oxidized to form oxygen. Thus bubbles come from anode.

Cathode : Ag⁺ + e⁻ → Ag

Anode : 2H₂O + 4e⁻ → 4H⁺ + O₂

(5) When 0.1M of CuSO₄ is placed in between two graphite electrode, negative cathode attracts Cu²⁺ ions from CuSO₄ and H⁺ ions(H₂O). As the reduction potential of Cu²⁺ is greater than H⁺, thus Cu²⁺ is reduced to copper metal on the cathode surface. Thus cathode turned red or orange.

And at the anode H₂O is oxidize to bubble of O₂ gas.

Cathode : Cu²⁺ + 2e⁻ → Cu

Anode : 2H₂O + 4e⁻ → 4H⁺ + O₂

(6) When 0.1M CuSO₄ is placed in between two copper electrode, the negative cathode electrode attracts Cu²⁺ and H⁺ ions, The only copper ion is discharged. Thus copper is gained at the cathode.

Cathode : Cu²⁺ + 2e⁻ → Cu

The negative sulphate ions SO₄²⁻ or the traces of OH⁻ ions are attracted to the positive electrode. Both the OH⁻ and SO₄²⁻ ions are too stable and nothing happens to them because the copper anode is preferentially oxidize to discharge Cu²⁺ ions.

Anode : Cu → 2e⁻ + Cu²⁺

So, 0.1M NaCl is base, 0.1M NaBr is base, 0.1M NaI is base, 0.1M of AgNO₃ is acid, 0.1M of CuSO₄ is acid, 0.1M CuSO₄ isacid.

To learn more about Electrode reactions, Here :

https://brainly.com/question/1370576?referrer=searchResults

#SPJ4

A buffer solution contains 0.447 m nahso3 and 0.280 m k2so3. if 0.0367 moles of potassium hydroxide are added to 225 ml of this buffer, basic is the ph of the resulting solution i.e. 10 approx.

The buffer solution, a water-based solvent solution, is created by combining a weak acid and its conjugate base, or a weak base and its conjugate acid. They can be diluted or have small amounts of acid or alkali added to them without the pH of the solution altering. The pH of buffer solutions scarcely changes when a modest amount of a strong acid or strong base is introduced. They are consequently used to keep the pH level constant. The concentration of hydrogen ions in the buffer solution only slightly changes when a little amount of acid or base is diluted or added (pH). Buffer solutions are used in the processes of fermentation, food preservation, medicine delivery, electroplating, and printing because particular hydrogen ion concentrations are necessary for enzyme activity and the blood's ability to carry oxygen (pH). Buffer solutions, which are combinations of a weak acid and its conjugate base or a weak base and its conjugate acid, can be used to maintain pH.

To know more about buffer please refer: https://brainly.com/question/22821585

#SPJ4

Subtractive colors mixing with all three primaries will result in black.

Adding all three subtractive primary color filters together will absorb all the colors of the white light spectrum as appeared below. Each filter (or pigment) absorbs its harmonizing color and transmits (diffusely reflects) the others.

Primary colors union of these three results in white. The subtractive primary colors are related to the subtraction of light: cyan, magenta, and yellow, the colors used in four-color printing, the union of these results in black.

So we can conclude that the usually used subtractive primary colors are cyan, magenta, and yellow, and if you overlap all three in a successful equal mixture.

Learn more about colors here: https://brainly.com/question/911645

#SPJ1

Answer:

jellyfish

Explanation:

Answer: i would say jellyfish

Explanation:

just because this guy said so