Redox Reactions And Electrochemistry Ques 665
Question: The standard reduction potentials at 298K for the following half reactions are given against each
$ Z{{n}^{2+}}(aq)+2e\rightarrow Zn(s);-0.762V $ $ C{{r}^{3+}}(aq)+3e\rightarrow Cr(s);-0.740V $ $ 2{{H}^{+}}(aq)+2e\rightarrow H_2(g);0.00V $ $ F{{e}^{3+}}(aq)+e\rightarrow F{{e}^{2+}}(aq);0.770V $ Which is the strongest reducing agent-
Options:
A) Zn(s)
B) Cr(s)
C) $ H_2( g ) $
D) $ F{{e}^{3+}}(aq) $
Show Answer
Answer:
Correct Answer: A
Solution:
[a] Since oxidation potential of Zn is highest hence strongest reducing agent.
