Question

11.6

1. The partial pressure of a solution component will always be:

Select the correct answer below:

a. less than its vapor pressure in pure form

b. more than its vapor pressure in pure form

c. equal to its vapor pressure in pure form

d. depends on the substance

Answer 1

a. less than its vapor pressure in pure form   >>>>answer

P0-Ps lowering of vapor pressure. The solution vapor pressure is always less than the vapor pressure of pure solvent.

vapor pressure of pure solvent = P0

vapor pressure of solution         = Ps

vapor pressure is depends upon the surface area of solute. The surface area of solute is increases vapor pressure is increases.

In solution surface area of solute is more than pure solvent. The vapor pressure of solution is less