STANDARDChemistry-Electrochemistry
STANDARD Chemistry Standard Electrode Potentials Multiple Correct Question
Type: Multiple Correct-conceptual-Medium-Class 12
Which of the following will act as cathode when connected to standard hydrogen electrode which has E° value given as zero? (i) Zn²⁺/Zn, E° = −0.76 V (ii) Cu²⁺/Cu, E° = +0.34 V (iii) Al³⁺/Al, E° = −1.66 V (iv) Hg²⁺/Hg, E° = +0.885 V
A
(i) and (ii)
B
(ii) and (iv)
C
(i) and (iii)
D
(i), (ii), (iii) and (iv)
Correct Answer
Option B
Detailed Explanation
When the value of standard reduction potential is positive, the electrode undergoes reduction and acts as cathode.
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