Chemistry - Liquid Solution Question with Solution | TestHub

According to Henry's law, the solubility of a gas in a liquid is directly proportional to the pressure of the gas over the solution.

$S=K_H\times P$

Given:
$K_H=6.8\times 10^{-4}{\text{ mol dm}}^{-3}{\text{ atm}}^{-1}$
$P=0.8\text{ atm}$

Substituting the values:
$S=6.8\times 10^{-4}\times 0.8$

$S=5.44\times 10^{-4}{\text{ mol dm}}^{-3}$

Since $1{\text{ mol dm}}^{-3}=1\text{ M}$,
$S=5.44\times 10^{-4}\text{ M}$

Answer: $5.44\times 10^{-4}\mathrm{M}$