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In a binary solution with a non-volatile solute, what is the proportionality constant in Raoult's law equal to?

Options

  1. AThe mole fraction of the solute
  2. BThe vapor pressure of the solvent in the pure state
  3. CThe temperature of the solution
  4. DThe pressure of the surroundings

Correct answer

B. The vapor pressure of the solvent in the pure state

Step-by-step solution

According to Raoult's law, the proportionality constant is equal to the vapor pressure of the pure solvent in the pure state.

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