The Henry's law constant $\left(\mathrm{K}_H\right)$ values of three gases $(\mathrm{A}, \mathrm{B},…
The Henry's law constant $\left(\mathrm{K}_H\right)$ values of three gases $(\mathrm{A}, \mathrm{B}, \mathrm{C})$ in water are $145,2 \times 10^{-5}$ and 35 kbar , respectively. The solubility of these gases in water follow the order:
B $\gt$ C $\gt$ A
A $\gt$ C $\gt$ B
A $\gt$ B $\gt$ C
B $\gt$ A $\gt$ C
Solution
Value of Henry's law constant $\propto \frac{1}{\text { Solubility of gas }}$
Higher the value of $\mathrm{K}_H$ at a given pressure, lower is the solubility of the gas in the liquid.
$\mathrm{K}_H$ value of gases (given) : $\mathrm{A}\gt\mathrm{C}\gt\mathrm{B}$
$\therefore \quad$ Order of solubility of gases in water : $\mathrm{B}\gt\mathrm{C}\gt\mathrm{A}$