Given below are two statements: Statement I : The Henry's law constant KH is constant with respect to variations in solution's concentration over the range for which the solution is ideally dilute. Statement II : KH does not differ for the same solute in different solvents. In the light of the above statements, choose the correct answer from the options given below.

Henry Law Constant and Ideal Dilute Solutions | JEE Main 2026 Chemistry

Given below are two statements:

Statement I : The Henry's law constant K_H is constant with respect to variations in solution's concentration over the range for which the solution is ideally dilute.

Statement II : K_H does not differ for the same solute in different solvents.

In the light of the above statements, choose the correct answer from the options given below.

A. Both Statement I and Statement II are true

B. Statement I is true but Statement II is false

C. Statement I is false but Statement II is true

D. Both Statement I and Statement II are false

Correct Answer: Statement I is true but Statement II is false

Detailed Explanation

Henry’s law states that at constant temperature, the solubility of a gas in a liquid is directly proportional to the partial pressure of that gas above the solution.

Mathematically,

p = K_H · x

where p is the partial pressure of the gas, x is the mole fraction of gas in solution, and K_H is Henry’s law constant.

Analysis of Statement I:

For an ideally dilute solution, Henry’s law is valid and the value of K_H remains constant even if the concentration of the solute changes within the dilute range.

Hence, Statement I is true.

Analysis of Statement II:

Henry’s law constant depends on:

• Nature of the solute
• Nature of the solvent
• Temperature

For the same solute, K_H has different values in different solvents because gas–solvent interactions change.

Hence, Statement II is false.

Therefore, the correct option is:

Statement I is true but Statement II is false

This concept is extremely important for JEE Main, JEE Advanced and IIT JEE, especially in physical chemistry assertion–reason questions.

Detailed Explanation

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