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Chemistry-Standard Electrode Potential

NEET Chemistry Standard Electrode Potential MCQ Question

Type: MCQ-numerical-Medium-Class 11

Given the standard electrode potentials: EZn2+/Zn0=−0.76 VE^0_{Zn^{2+}/Zn} = -0.76 \text{ V} and ECu2+/Cu0=0.34 VE^0_{Cu^{2+}/Cu} = 0.34 \text{ V}, what is the standard cell potential for the galvanic cell constructed from these reactions?

A

10 V

B

0.42 V

C

-1.10 V

D

-0.42 V

Correct Answer

Option A

Detailed Explanation

The standard cell potential is calculated by subtracting the standard electrode potential of the anode from the cathode: Ecell0=ECu2+/Cu0−EZn2+/Zn0=0.34 V−(−0.76 V)=1.10 VE^0_{cell} = E^0_{Cu^{2+}/Cu} - E^0_{Zn^{2+}/Zn} = 0.34 \text{ V} - (-0.76 \text{ V}) = 1.10 \text{ V}.

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