The standard reduction potentials at 298 K for single electrodes are given below.
| Electrode | Electrode potential (volt) |
| Mg2+ /Mg | -2.34 |
| Zn2+ /Zn | -0.76 |
| Fe2+ /Fe | -0.44 |
A. Zn can reduce both Mg2+ and Fe2+
B. Fe can reduce both Mg2+ and Zn2+
C. Mg can reduce both Zn2+ and Fe2+
D. Mg can reduce Zn2+ but not Fe2+
Answer: Option C
This Question Belongs to Engineering Chemistry >> Electrochemistry
Related Questions on Electrochemistry
A. $$2.303\frac{{RT}}{F}$$
B. $$ - 2.303\frac{{RT}}{F}$$
C. $$E_{{M^ + }|m}^ \circ + 2.303\frac{{RT}}{F}$$
D. $$E_{{M^ + }|m}^ \circ - 2.303\frac{{RT}}{F}$$
Given that E°(Fe3+, Fe) = -0.4 V and E°(Fe2+, Fe) = -0.44 V, the value of E°(Fe3+, Fe2+) is
A. 0.76V
B. -0.40 V
C. -0.76 V
D. 0.40 V
A. decrease by a factor of 2
B. increase by a factor of 2
C. decrease by a factor of 4
D. increase by a factor of 4
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