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  • Assertion (A): When NaCl is added to water, a depression in freezing point is observed

In the following questions, a statement of Assertion (A) followed by a statement of
Reason (R) is given. Choose the correct answer out of the following choices:
(a) Assertion and reason both are correct statements and reason is the correct explanation for Assertion.
(b) Assertion and reason both are correct statements but reason is not the correct explanation for Assertion.
(c) Assertion is correct statement but reason is wrong.
(d) Assertion and reason both are incorrect.
(e) Assertion is wrong but reason is correct.

Assertion (A): When NaCl is added to water, a depression in freezing point is observed. 

Reason (R): The lowering of vapour pressure of a solution causes depression in the freezing point.

Answers (1)

The answer is the option (a) Addition of a non-volatile solute to a volatile solvent decreases vapour pressure and increases boiling point.

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