First slide

Electrochemical cell

Question

Statement 1: $E_{cell}$ should have a positive value for the cell to function.
Statement 2: $E_{cathode} < E_{anode}$

Easy

A

Both statements 1 and 2 are correct
B

Both statements 1 and 2 are incorrect
C

Statement 1 is correct statement 2 is incorrect
D

Statement 1 is incorrect statement 2 is correct

Solution

Assertion is true but the reason is false. Feasibility of chemical reaction depends on Gibb's free energy which is related to $E_{cell}^{\circ} as, {ΔG}^{\circ} = - {nFE}_{cell}^{\circ}$
When value of $E_{cell}^{o}$ is positive then $∆ G^{o}$ becomes negative. Hence, reaction becomes feasible.
Correct reason is $E_{cathode} > E_{anode}$ .

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