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Question: Two beakers of capacity 500 mL were taken. One of these beaker, labeled as “A”, was filled with 400 ...

Two beakers of capacity 500 mL were taken. One of these beaker, labeled as “A”, was filled with 400 mL water of 2 M solution of NaCl. At the same temperature both the beakers were placed in closed containers of same material and same capacity as shown in figure

At a given temperature, which of the following statement is correct about the vapour pressure of pure water and that of NaCl solution.

A

Vapour pressure in container (1) is more than that in container (2).

B

Vapour pressure in container (1) is less than that in container (2)

C

Vapour pressure is equal in both the containers.

D

Vapour pressure in container (2) is twice the vapour pressure in container (1)

Answer

Vapour pressure in container (1) is more than that in container (2).

Explanation

Solution

When a non volatile solute (NaCl) is dissolved in a liquid its vapour pressure decrease.