Question

$K_H$ values for $Ar_(g)$, $CO_{2(g)}$, $HCHO_{(g)}$ and $CH_{4(g)}$ are $40.39$, $1.67$, $1.83 \times 10^{-5}$ and $0.413$ respectively. Arrange these gases in the order of their increasing solubility.

• A. $HCHO < CH_4 < CO_2 < Ar$
• B. $HCHO < CO_2 < CH_4 < Ar$
• C. $Ar < CO_2 < CH_4 < HCHO$
• D. $Ar < CH_4 < CO_2 < HCHO$

Answer 1

Answer: (C)

$Ar < CO_2 < CH_4 < HCHO$

Answer 2

Higher the value of $K_H$, the lower is the solubility of gas in the liquid. Thus, the order of increasing solubility is $\begin{matrix}&Ar&