Which one of the following gases has the lowest value of Henry's law constant?

Options

A. `N_(2)`
B. `He`
C. `H_(2)`
D. `CO_(2)`

Answer

D

Explanation

According to Henry's law the mass of a gas dissolved per unit volume of solvent is proportional to the pressure of the gas at constant temperature m = K p i.e.as the solubility increases, value of Henry's law constant decreases. Since `CO_(2)` is most soluble in water among the given set of gases. Therefore `CO_(2)` has the lowest value of Henry's law constant.