Which of the following statements is/are incorrect?

The value of $K_H$ is independent of temperature.

The correct answer is Option (2) → The value of KH is independent of temperature.

Let's analyze each statement carefully:

1. Solubility of gases is inversely proportional to the KHK_HKH​ value at the given pressure. ✅
• True, because $C = K_H P → K_H = P/C$, so higher $K_H$​ → lower solubility.
2. The value of $K_H$​ is independent of temperature. ❌
• False. $K_H$​ depends on temperature; solubility of gases usually decreases with increasing temperature.
3. Raoult's law is a special case of Henry's law. ✅
• True. Raoult's law describes the vapor pressure of a solvent in solution, which can be seen as a special case of Henry's law for volatile solutes.
4. The solubility of a gas in a liquid varies directly with the partial pressure of gas over the liquid surface. ✅
• True, this is Henry's law.