Redox Reactions And Electrochemistry Ques 554
Question: The standard reduction potentials at 298K for the following half reactions are given against each
$ Z{n^{2+}}(aq)+2{e^{-}}\rightarrow Zn(s);-0.762,V $ $ C{r^{3+}}(aq)+3{e^{-}}~\rightarrow Cr(s);-0.740,V $ $ 2{H^{+}}(aq)+2{e^{-}}\rightarrow H_2(g);,0.00,V $ $ F{e^{3+}}(aq)+2{e^{-}}\rightarrow F{e^{2+}}(aq);0.770,V $ 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.
