The solubility of Ar in water at 25 °C is 1.6 × 10^-3 M when the pressure of the Ar above the solution is 1.0 atm.The solubility of Ar at a pressure of 2.5 atm is ________ M. A)1.6 × 10³ B)6.4 × 10^-4 C)4.0 × 10^-3 D)7.5 × 10^-2 E)1.6 × 10^-3

Question

Quizplus · Accepted Answer

The solubility of gases in liquids, according to Henry's law, is directly proportional to the pressure of the gas above the liquid. If the solubility of Ar in water is 1.6 × 10^-3 M at 1.0 atm, then at 2.5 atm (2.5 times the initial pressure), the solubility will also increase by a factor of 2.5. Therefore, the solubility at 2.5 atm is 1.6 × 10^-3 M × 2.5 = 4.0 × 10^-3 M.

The Solubility of Ar in Water at 25 °C Is