Solutions and Colligative PropertieshardMCQ SINGLE

Regarding the variation of Henry's Law constant () for a specific gas-liquid system, which of the foSolutions and Colligative Properties Chemistry Question

Question

Regarding the variation of Henry's Law constant ($K_H$) for a specific gas-liquid system, which of the following thermodynamic statements is chemically correct?

Answer: B

💡 Solution & Explanation

The dissolution of a gas in a liquid is typically an exothermic process. As temperature increases, Le Chatelier's principle dictates that equilibrium shifts backward, reducing solubility ($\chi$). Since $P = K_H \chi$, for a constant pressure $P$, a lower $\chi$ requires a higher $K_H$. Therefore, $K_H$ increases with temperature.

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