Question

Molar solubility of helium, nitrogen and oxygen are plotted against partial pressure of the gas at constant temperature.
Henry’s law constant for these gases will lie in following sequence?

• A. $O _{2}> N _{2}> He$
• B. $O _{2}< N _{2}< He$
• C. $O _{2}= N _{2}= He$
• D. $O _{2}> N _{2}< He$

Answer 1

Answer: (B)

Gas	Temperature	$K_H (K bar)$
He	293	144.97
$N_2$	293	76.48
$O_2$	293	34.86

Higher the value of Henry's Law constant, the lower is the solublity of the gas in the liquid.