A gas obeys Henry's law in water at a fixed temperature. If $K_H$ for the gas-liquid system is large, what does it indicate?
AThe gas is highly soluble in the liquid
BThe gas has low solubility in the liquid
CThe gas will react rapidly with water
DThe liquid has become concentrated
Answer & Solution
Correct answer: B. The gas has low solubility in the liquid
Using $P = K_H x$, for a given pressure, $x = P/K_H$. A larger $K_H$ gives a smaller mole fraction of dissolved gas, so the gas is less soluble.
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