Standard reduction potential values for the electrodes are given below Mg2++2e−→Mg;E0=−2.37V Zn2++2e−→Zn;E0=−0.76V Fe2++2e−→Fe;E0=−0.44V Which of the following statements is correct?
A
Zinc will reduce Fe2+
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B
Zinc will reduce Mg2+
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C
Mg oxidizes Fe
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D
Zinc oxidizes Fe
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Solution
The correct option is B Zinc will reduce Fe2+ Zinc will reduce Fe2+ as zinc has more negative standard reduction potential than iron. More negative standard reduction potential means zinc is stronger reducing agent than iron.