When a substance is dissolved in a solvent,th | vedclass

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Question

(A) According to Raoult's law,the addition of a non-volatile solute decreases the vapour pressure of the solvent.Since the boiling point $(b.p.)$ is t

Vedclass · Accepted Answer

An increase in the $b.p.$ of the solution

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(A) According to Raoult's law,the addition of a non-volatile solute decreases the vapour pressure of the solvent.Since the boiling point $(b.p.)$ is the temperature at which the vapour pressure of a liquid becomes equal to the atmospheric pressure,a lower vapour pressure requires a higher temperature to reach atmospheric pressure.Therefore,the boiling point of the solution increases $(b.p. 	ext{ elevation})$.Thus,the correct option is $A$.

When a substance is dissolved in a solvent,the vapour pressure of the solvent is decreased. This results in:

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