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JEE PYQ: Electrochemistry Question 5

Question 5 - 2021 (24 Feb Shift 1)

The electrode potential of $\text{M}^{2+}/\text{M}$ of 3d-series elements shows positive value for:

(1) Zn

(2) Cu

(3) Fe

(4) Co

Show Answer

Answer: (2) Cu

Solution

Among the 3d series elements, Cu has a positive standard electrode potential ($E^0_{\text{Cu}^{2+}/\text{Cu}} = +0.34$ V). All others have negative values.


Learning Progress: Step 5 of 37 in this series