Question

Assertion: During the electrolysis of molten sodium chloride, sodium ions move towards the cathode.
Reason: The cathode is positively charged and attracts cations towards itself.

• A. (A) is true but (R) is false.
• B. Both (A) and (R) are true and (R) is the correct explanation of (A).
• C. Both (A) and (R) are false.
• D. Both (A) and (R) are true but (R) is not the correct explanation of (A).

Answer 1

The correct option is A (A) is true but (R) is false.

• Molten sodium chloride on electrolysis yields sodium ions (cations) and chloride ions (anions). The ions migrate towards different electrodes.
• The cathode is negatively charged so it attracts the sodium ion to migrate towards it.
• At the same time, the anode being positively charged attracts the chloride ion to migrate towards it.
• So the assertion is true but the reason is false.