Vapour pressure-temperature curves of pure solvent and a solution containing a non-volatile solute are shown in the figure. Select the correct statement(s)

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Curve I represents the variation of vapour pressure of solution and II that of solvent with temperature

Gab ab represents vapour pressure of the solvent

Gap ab represents vapour pressure of the solution

Curve I and II represents the variation of vapour pressures of solvent and solution respectively with temperature

answer is B.

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Detailed Solution

Vapour pressure of solution containing non-volatile solute is always smaller than that of solvent. Points, a and b represent the boiling points of solvent and solution respectively (temperatures at which their V.P. = 1 atm each).

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