Question

Choose the aqueous solution with the highest vapor pressure. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable. Choose the aqueous solution with the highest vapor pressure. These are all solutions of nonvolatile solutes and you should assume ideal van't Hoff factors where applicable.
a. 0.50 m C₂H₆O₂
b. 0.50 m C₅H₁₂O₅
c. 0.50 m C₄H₁₀O₄
d. 0.50 m C₁₁H₂₄O₁₁
e. They all have about the same vapor pressure.

Answer 1

Answer:

Option e. They all have about the same vapor pressure.

Explanation:

If we assume the same molality in each solution and the gases are dissolved in the same amount of water, we would assume the same mole fraction for each.

The moles of solute are the same in each solution.

So we assume, i = 1, as they are nonvolatile solutes

The solvent is the same in each solution → water

ΔP = P° . Xm . i

No numbers in the formula are modiffied, that's why the only option which matches, is e.

Answer 2

Answer (E)is the right answer