Redox Reactions And Electrochemistry Ques 170
Question: $ E^{o} $ for the cell $ Zn|Z{n^{2+}}(aq)||C{u^{2+}}(aq)|Cu $ is $ 1.10,V $ at $ 25^{o}C $ , the equilibrium constant for the reaction $ Zn+C{u^{2+}}(aq) $ ⇌ $ Cu+Z{n^{2+}}(aq) $ is of the order of [CBSE PMT 1997]
Options:
A) $ {10^{-28}} $
B) $ {10^{-37}} $
C) $ {10^{+18}} $
D) $ {10^{+17}} $
Show Answer
Answer:
Correct Answer: B
Solution:
$ E_{cell}^{o}=\frac{0.059}{n}\log K $ $ \log K=\frac{1.10\times 2}{0.059}=37.2881 $ or $ K={10^{-37}} $ .
