Question

the mole fraction of the solvent in the solution of a non .volatile solute is 0.980.the relative lowering of vapour presssure is​

Answer 1

Answer: Relative lowering in vapour pressure = 0.02

Explanation: Rel. Lowering = Mole fraction of solute

Here mole fraction of solute is = 1 - 0.980 = 0.02

So, lowering is also 0.02.