Question

Which of the following factors will increase solubility of $N{H}_{3\left(g\right)}$ in $H_{2}O$?
$N{H}_{3\left(g\right)}+H_2{O}_{\left(aq\right)}\rightleftharpoons N{H}_{4}O{H}_{\left(aq\right)}$

• A. Increase in pressure
• B. Addition of water
• C. Liquefaction of $N{H}_3$
• D. Decrease in pressure

Answer 1

Answer: (A)

Increase in pressure

Solubility by Henry's law $C_g=X{P}_g$ where $X=$ henry's constant for only gases. Hence, ${NH}_{3\left(g\right)}$ solubility increases with increase pressure $\left(P_g\right)$ because $C_g\alpha P_g$.