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Henry's law for gas dissolution: solubility of a gas (mass m_gas per unit mass of solvent) is:
ADirectly proportional to partial pressure of the gas
BIndependent of pressure
CInversely proportional to pressure
DProportional to temperature
Answer & Solution
Correct answer: A. Directly proportional to partial pressure of the gas
Henry's law: solubility ∝ partial pressure of gas (at constant T). C = k_H × P. Higher gas pressure means more gas dissolved (think soft drinks under pressure).
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