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Question 750004
JEE Chemistry · Easy

Solutions and Colligative Properties: Raoult's law MCQ

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Raoult's lawEasyQuestion 750004

Question

Raoult's law states that for a volatile solute, the partial pressure of the solvent over the solution is:
  1. A
    p = xsolvent × p°solvent
    Correct
  2. B
    p = p°solvent + p°solute
  3. C
    p = p°solvent − p°solute
  4. D
    p = p°solvent / xsolvent

Correct answer

p = xsolvent × p°solvent

Explanation

Raoult's law: p_A = x_A × p°_A. The partial pressure of solvent A equals its mole fraction times its pure vapour pressure.

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