Which of the following laws explains the relationship between the pressure and solubility of a gas in a liquid?
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A.
Charles’ Law
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B.
Raoult’s Law
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C.
Avogadro’s Law
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D.
Henry’s Law
Correct Answer:
D. Henry’s Law
Explanation:
Henry's Law states that the amount of a gas dissolved in a liquid is directly proportional to the partial pressure of that gas above the liquid's surface. This principle explains why increasing the pressure forces more gas molecules into the solvent, a phenomenon commonly observed in carbonated drinks where high pressure keeps carbon dioxide dissolved until the container is opened. While Charles' Law relates gas volume to temperature and Avogadro's Law connects volume to the number of moles, Henry's Law specifically addresses the equilibrium between pressure and gas solubility. Raoult's Law, conversely, focuses on the vapor pressure of solvents in solutions rather than the solubility of gases under pressure.
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