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.

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.

Match the column I with column II and mark the appropriate choice. Column I Column II (p) Liquid ⇌ vapour (i) Saturated solution (q) Solid ⇌ liquid (ii) Boiling point (r) Solid ⇌ vapour (iii) Sublimation point (s) Solute(s) ⇌ solute (solution) (iv) Melting point

(p)-(ii), (q)-(iv), (r)-(iii), (s)-(i)

(p)-(i), (q)-(iii), (r)-(ii), (s)-(iv)

(p)-(iv), (q)-(ii), (r)-(i), (s)-(iii)

(p)-(iii), (q)-(iv), (r)-(ii), (s)-(i)

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Important Questions on Equilibrium

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.

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

State Henry's law.

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

The vapour pressure of a liquid in a closed vessel

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

The molar heat capacity of water in equilibrium with ice at constant pressure is

HARD

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

The solid-vapour equilibrium can be represented as:

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

If the pressure is applied to the following equilibrium of

liquid ⇌ vapour

, the boiling point of the liquid

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Sea divers use mixture of

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

If pressure is applied to the equilibrium of

solid ⇌ liquid

. The melting point of the solid

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

What will be the correct order of vapour pressure of water, acetone and ether at

30 ° C

. Given that among these compounds, water has maximum boiling point and ether has minimum boiling point?

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Match the column I with column II and mark the appropriate choice.

	Column I		Column II
(p)	Liquid $⇌$ vapour	(i)	Saturated solution
(q)	Solid $⇌$ liquid	(ii)	Boiling point
(r)	Solid $⇌$ vapour	(iii)	Sublimation point
(s)	Solute(s) $⇌$ solute (solution)	(iv)	Melting point

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

If the pressure is applied to the following equilibrium of

liquid ⇌ vapour

, the boiling point of the liquid

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Dissolution of a solute is an exothermic process if

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Which of the following is not a physical equilibrium?

MEDIUM

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Which of the following is not an example of physical equlibrium?

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

During depression of freezing point in a solution, the following are in equilibrium:

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

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

HARD

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Which of the following is not a general characteristic of equilibrium involving physical process?

EASY

Chemistry>Physical Chemistry>Equilibrium>Equilibrium in Physical Processes

Which of the following is not a general characteristic of equilibria involving physical processes?

Which of the following best describes the difficulty in breathing as one climbs to higher altitudes?

Important Questions on Equilibrium

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