Redox Reactions And Electrochemistry Ques 57

Question: If the $ Z{n^{2+}}/Zn $ electrode is diluted to 100 times then the change in e.m.f. [DPMT 2005]

Options:

A) Increase of $ 59,mV $

B) Decrease of $ 59,mV $

C) Increase of $ 29.5,mV $

D) Decrease of $ 29.5,mV $

Show Answer

Answer:

Correct Answer: A

Solution:

$ E_{cell}=\frac{0.059}{n}\log \frac{1}{C}=-\frac{0.059}{2}\log \frac{1}{100} $ $ =-\frac{0.059}{2}(-2)=0.059V=59mV $ . (increase)



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