A cylinder fitted with a movable piston contains liquid water in equilibrium with water vapour at 25°C

Question 1

A cylinder fitted with a movable piston contains liquid water in equilibrium with water vapour at 25°C. Which operation result in a decrease in the equilibrium vapour pressure?

(A) Moving the piston downward a short distance

(B) Removing a small amount of vapour

(C) Removing a small amount of the liquid water

(D) Dissolving salt in the water

Question 2

Correct option (D) Dissolving salt in the water

Explanation:

Addition of salt always lowers the vapour pressure. Also vapour pressure of a liquid is its characteristic pressure and depends only on temperature.

kratos · Answer 1 · 2020-07-30T03:41:23+0000

Correct option (D) Dissolving salt in the water

Explanation:

Addition of salt always lowers the vapour pressure. Also vapour pressure of a liquid is its characteristic pressure and depends only on temperature.

A cylinder fitted with a movable piston contains liquid water in equilibrium with water vapour at 25°C

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A cylinder fitted with a movable piston contains liquid water in equilibrium with water vapour at 25°C

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