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Study the Assertion and Reason and choose the correct option.
If a solution contains both H⁺ and Na⁺ ions, the H⁺ ions are reduced first at cathode.
Assertion: If a solution contains both $\text{H}^+$ and $\text{Na}^+$ ions, the $\text{H}^+$ ions are reduced first at cathode.
Reason: Cations with higher $E^\circ$ value are reduced first at cathode.
- (a)Both Assertion and Reason are true, and Reason is the correct explanation for Assertion.
- (b)Both Assertion and Reason are true, but Reason is not the correct explanation for Assertion.
- (c)Assertion is true but Reason is false.
- (d)Assertion is false but Reason is true.
Answer
Answer
Correct option: (a)
Answer: (a) Both Assertion and Reason are true, and Reason is the correct explanation for Assertion.
$E^\circ$ of $\mathrm{H^+}$ (0.00 V) is higher than that of $\mathrm{Na^+}$ ($-2.71$ V), so $\mathrm{H^+}$ ions are reduced first at the cathode.