Question

Which of the following graph correctly represents the plots of \(K_H\) at 1 bar gases in water versus temperature?

• A.
• B.
• C.
• D.

Hint:

For gases in water, the temperature dependence of Henry’s Law constant shows an initial decrease followed by an increase in solubility at higher temperatures. This behavior varies across different gases.

Answer 1

The Correct Option is D

As temperature increases, solubility first decreases then increases, hence \( K_H \) first increases, then decreases. At moderate temperature, the value of \( K_H \) follows the order: \[ \text{He}>\text{N}_2>\text{CH}_4 \]