Which solution has the highest vapor pressure?
A)0.75 mol of a nonvolatile compound in 750 g of ethanol
B)0.75 mol of a volatile compound in 750 g of ethanol
C)1.5 mol of a nonvolatile compound in 750 g of ethanol
D)Solutions have the same vapor pressure and it is higher than the vapor pressure of solution.
E)Not enough information is given to determine which solution has the highest vapor pressure.

Question

Quizplus · Accepted Answer

The volatile compound will have a higher vapor pressure than the nonvolatile compound because the volatile compound will evaporate more quickly. Therefore, option B with 0.75 mol of a volatile compound in 750 g of ethanol will have the highest vapor pressure.

Which Solution Has the Highest Vapor Pressure