alleryFor dilute solutions, lowering of vapor pressure of solvent ΔP / P°_A =
AVolume change
Bx_solute (mole fraction of solute) — colligative
CMass of solute
DAlways 1
Answer & Solution
Correct answer: B. x_solute (mole fraction of solute) — colligative
ΔP / P°_A = x_B (solute mole fraction) by Raoult's law.
**Colligative:** depends only on number of solute particles, not their nature.
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