Question

Assertion: When a saturated solution of Potassium chloride is heated it becomes unsaturated

Reason:​ Solubility of Potassium chloride increases with rising temperature.

• A. If ‘A’ and ‘R’ are true and ‘R’ is the correct reason for ‘A’.
• B. If ‘A’ and ‘R’ are true and ‘R’ is not the correct reason for ‘A’.
• C. If ‘A’ is correct and ‘R’ is wrong.
• D. If ‘A’ is wrong and ‘R’ is correct.

Answer 1

The correct option is A

If ‘A’ and ‘R’ are true and ‘R’ is the correct reason for ‘A’.

Answer:

The explanation for the Assertion statement:

• Solubility depends on the temperature of the solution.
• On heating a saturated solution of Potassium chloride this allows more solutes to dissolve in the solution and makes the solution unsaturated.

The explanation for the Reason statement:

• Because of the application of heat to a saturated solution, the intermolecular space between the particles increases due to an increase in the kinetic energy of the particles.
• This allows more solutes to dissolve in the solution and makes the solution unsaturated.
• So, the Solubility of Potassium chloride increases with rising temperature.

Conclusion:

So, ‘A’ and ‘R’ are true and ‘R’ is the correct reason for ‘A’.

Therefore, option A is the correct answer.