Determine the greater quantity in each case Substance A has

Determine the greater quantity in each case!

Substance A has a larger molar mass than substance B. You dissolve 1 gram of each in water. Which solution has the higher vapor pressure? Explain.

1)vapour pressure is directly proportional to the mole fraction of the solvent

since B has higher molar mass,

it will have less number of moles

so it will have greater vapour pressure

2)boiling point=Kb*m

where m is the molality

since the number of moles of A is greater than that of B, A will have higher biling point

3)freezing point=Kf*m

where m is the molality

since the number of moles of A is greater than that of B, A will have lower freezing point