Question

When the temperature is increased, the solubility of common salt in water

• A. Decreases
• B. Increases
• C. Does not change
• D. None of these

Answer 1

The correct option is B

Increases

Explanation for correct option:

Option B

• The solubility of salt increases with an increase in temperature.
• When we increase the temperature of the saturated solution of common salt, the salt lying at the bottom of the container gets dissolved because at higher temperatures more solute gets dissolved.

Therefore, option B is correct.

• Explanation for incorrect option:

Option A

• In general, the amount of solute dissolved in a certain fixed volume of any solvent increases with a rise in temperature, but the solubility of gases in water decreases with rising temperature.
• So, only in a gaseous mixture, the solubility decreases.

Therefore, option A is incorrect.

Option C

• By increasing or decreasing the temperature the solubility is definitely affected either for the saturated or unsaturated solution.
• So, we can not say that solubility does not change.

Therefore, option C is incorrect.