Question

Given below are two statements:
Statement I: The Henry’s law constant \( K_H \) is constant with respect to variations in solution 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 false
• B. Statement I is false but Statement II is true
• C. Both Statement I and Statement II are true
• D. Statement I is true but Statement II is false

Hint:

Henry’s law is valid only for dilute solutions, and the constant \( K_H \) depends on the nature of both solute and solvent.

Answer 1

The Correct Option is C

Step 1: Analyze Statement I.
Henry’s law states that the partial pressure of a gas is directly proportional to its mole fraction in a solution for dilute solutions. Within the ideal dilute range, the Henry’s law constant \( K_H \) remains constant. Thus, Statement I is true.
Step 2: Analyze Statement II.
The value of Henry’s law constant depends on the nature of both the solute and the solvent. For the same solute, different solvents interact differently with the gas molecules, leading to different \( K_H \) values. Hence, Statement II is false.
Step 3: Final conclusion.
Statement I is true but Statement II is false.
Final Answer: \[ \boxed{\text{Statement I is true but Statement II is false}} \]