Question

Assertion :The standard reduction potential of $M^{n+}/M$ electrode increases with increase in activity of $M^{n+}$ ion. Reason: The standard reduction potential is given by: $E_{RP}=E_{RP}^o+\frac{0.059}{n}log\left[M^{n+}\right]$

• A. Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
• B. Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
• C. Assertion is correct but Reason is incorrect
• D. Assertion is incorrect but Reason is correct

Answer 1

The correct option is D Assertion is incorrect but Reason is correct

The expression for the standard reduction potential is $E_{RP}=E_{RP}^o+\frac{0.059}{n}log\left[M^{n+}\right]$. Thus, the reason is correct.
As the activity of $M^{n+}$ ion increases, the standard reduction potential of $M^{n+}/M$ electrode also increases. Thus, the assertion is correct. Thus, both Assertion and Reason are correct and Reason is the correct explanation for Assertion.