Consider the given plots of vapour pressure (VP) vs temperature(T/K). Which amongst the following options is…
Consider the given plots of vapour pressure (VP) vs temperature(T/K). Which amongst the following options is correct graphical representation showing $\Delta \mathrm{T}_{\mathrm{f}}$, depression in the freezing point of a solvent in a solution?
Solution
On adding non-volatile solute in a solvent, the freezing point of solution decreases. $\mathrm{T}_{\mathrm{f}} < \mathrm{T}_{\mathrm{f}}^0$ F.P. of solution $ < $ F.P. of pure solvent Also V.P. of solution decreases on adding nonvolatile solute in a solvent.