Question

The vapour pressure at a given temperature of
an ideal solution containing 0.2 mol of a nonvolatile
solute and 0.8 mol of solvent is 60 mm of
Hg. The vapour pressure of the pure solvent at
the same temperature is
(a) 150 mm of Hg (b) 60 mm of Hg
(c) 75 mm of Hg (d) 120 mm of Hg

Answer 1

Answer:

B is the Answer

Explanation:

PoA + PoB = Pt

Use this equation to find the VP through Relative Lowering of Vapour Pressure.