Question

Which of the following does not affect solubility of a gas in liquid?

• A. Nature of gas and liquid
• B. Pressure
• C. Concentration
• D. Temperature

Hint:

Use Henry’s Law to relate pressure and solubility of gases: \( C = kP \)

Answer 1

The Correct Option is C

Step 1: Solubility of gases in liquids is influenced by several factors:
• Nature of solute and solvent: Polar gases dissolve better in polar solvents (like water), and non-polar in non-polar solvents.
• Pressure (Henry’s Law): Solubility is directly proportional to pressure exerted on the surface of the liquid. Higher pressure = greater solubility.
• Temperature: Increasing temperature generally decreases the solubility of gases in liquids due to exothermic dissolution.
Step 2: Concentration of the solution does not affect the intrinsic solubility of a gas in a liquid. It affects the amount already dissolved but not the capacity for dissolution. Hence, it’s not a factor influencing solubility.