Which of the following statements is/are incorrect?
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → The value of KH is independent of temperature.
Let's analyze each statement carefully:
- 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.
- The value of $K_H$ is independent of temperature.
- False. $K_H$ depends on temperature; solubility of gases usually decreases with increasing temperature.
- 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.
- 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.