A solution having mole fraction of a solute equal to 0.05 has vapour pressure 20 × 103 Nm-2. Hence the vapour pressure of a pure solvent is
A. 21.05 × 103 Nm-2
B. 4 × 105 Nm-2
C. 1 × 103 Nm-2
D. 2 × 104 Nm-2
Answer:A
A solution having mole fraction of a solute equal to 0.05 has vapour pressure 20 × 103 Nm-2. Hence the vapour pressure of a pure solvent is
A. 21.05 × 103 Nm-2 B. 4 × 105 Nm-2 C. 1 × 103 Nm-2 D. 2 × 104 Nm-2