Question

Which one of the following statements regarding Henry's law is not correct?

• A. The value of $K_{H}$ increases with function of the nature of the gas.
• B. Higher the value of $K_{H}$ at a given pressure, higher is the solubility of the gas in the liquids
• C. The partial pressure of the gas in vapour phase is proportional to the mole fraction of of the gas in the solution.
• D. Different gases have different $K_{H}$ (Henry's law constant) value at the same temperature.

Answer 1

Answer: (B)

Liquid solution
$P_{g a s}=K_{H}\times X_{g a s}asK_{H} \propto \frac{1}{X_{g a s}}$
So, more is $K_{H}$ less is solubility.
Solubility of gases is less at higher temperature.
So more is the temperature more is the $K_{H}$ as $K_{H} \propto \frac{1}{s o l u b i l i t y} \propto $ temperature.