Henry’s law states that at the amount of gas that is dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid when the temperature is kept constant. The constant of proportionality for this relationship is called Henry’s law constant (usually denoted by ‘k H ‘). The mathematical formula of Henry’s law is given by: P ∝ C ( or ) P = k H × C . Where, ‘P’ denotes the partial pressure of the gas in the atmosphere above the liquid. ‘C’ denotes the concentration of the dissolved gas. ‘k H ’ is the Henry’s law constant of the gas.

Henry’s law is a gas law which states that at the amount of gas that is dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid when the temperature is kept constant. The constant of proportionality for this relationship is called Henry’s law constant (usually denoted by ‘k H ‘). The mathematical formula of Henry’s law is given by: P ∝ C ( or ) P = k H × C . Where, ‘P’ denotes the partial pressure of the gas in the atmosphere above the liquid. ‘C’ denotes the concentration of the dissolved gas. ‘k H ’ is the Henry’s law constant of the gas.

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A physical process involving solids in liquids, there exists an equilibrium between the saturated solution and the undissolved solute, at a given temperature.

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Important Questions on Equilibrium

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Which one of the following is NOT an example of heterogeneous equilibrium?

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

State Henry's law.

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

The equilibrium constant for the reaction is

P_{4} (s) + 50_{2} (g) ⇌ P_{4} 0_{10} (s)

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

State Henry's law.

HARD

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

The number of correct statement/s involving equilibria in physical processes from the following is ________

(A) Equilibrium is possible only in a closed system at a given temperature.

(B) Both the opposing processes occur at the same rate.

(D) For dissolution of solids in liquids, the solubility is constant at a given temperature.

HARD

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

The thermal dissociation equilibrium of

{CaCO}_{3} (s)

is studied under different conditions.

{CaCO}_{3} (s) ⇌ CaO (s) + {CO}_{2} (g)

For this equilibrium, the correct statement(s) is/are

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Give one example for the given equilibria: Solid-Liquid Equilibria.

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

H_{2} S

is a toxic gas used in qualitative analysis. If solubility of

H_{2} S

in water at

S T P

0.195 m

. What is the value of

K_{H}

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Under what condition the given equilibria can exist? Solid-Liquid equilibrium

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Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

The vapour pressure of a liquid in a closed vessel

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

If surface area is increased

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Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

A liquid is kept in a closed vessel. If a glass plate of negligible mass with small hole is kept on top of the liquid surface, then vapour pressure of the liquid in the vessel is -

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Define Henry Law. Why the gas fizzes out when a soda water bottle is opened ?

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Give one example for the given equilibrium : Liquid-Gas Equilibrium.

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

If pressure is applied to the equilibrium of