Redox Reactions And Electrochemistry Ques 123
Question: The standard reduction potentials at $ 298,K $ for the following half reactions are given against each $ Z{n^{2+}}(aq.)+2e $ ⇌ $ Zn(s) $ ; - 0.762 $ C{r^{3+}}(aq)+3e $ ⇌ $ Cr(s) $ ; - 0.740 $ 2{H^{+}}(aq)+2e $ ⇌ $ H_2(g) $ ; 0.00 $ F{e^{3+}}(aq)+e $ ⇌ $ F{e^{2+}}(aq) $ ; 0.770 Which is the strongest reducing agent [IIT 1981; MP PET/PMT 1988; MP PMT 1989; MH CET 2001]
Options:
A) $ Zn(s) $
B) $ Cr(s) $
C) $ H_2(g) $
D) $ F{e^{2+}}(aq) $
Show Answer
Answer:
Correct Answer: A
Solution:
More negative is the reduction potential, higher will be the reducing property, i.e. the power to give up electrons.
