Redox Reactions And Electrochemistry Ques 740

Question: The standard EMF of a cell having one electron change is found to be 0.591 V at $ 25{}^\circ C $ . The equilibrium constant of the reaction is:

Options:

A) $ 1.0\times 10^{30} $

B) $ 1.0\times 10^{5} $

C) $ 1.0\times 10^{10} $

D) $ 1.0\times 10^{1} $

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Answer:

Correct Answer: C

Solution:

[c] $ E_{cell}^{o}=\frac{0.059}{1}\log K_{c} $ $ 0.059=\frac{0.059}{1}\log K_{c} $

$ \therefore $ $ K_{c}=1\times 10^{10} $



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