Redox Reactions And Electrochemistry Ques 89

Question: The standard EMF for the given cell reaction Zn+Cu2+=Cu+Zn2+ is 1.10V at 25oC . The EMF for the cell reaction, when 0.1M,Cu2+ and 0.1M,Zn2+ solutions are used, at 25oC is [MNR 1994; AMU 1999; UPSEAT 2002]

Options:

A) 1.10,V

B) 0.110,V

C) 1.10,V

D) ,0.110,V

Show Answer

Answer:

Correct Answer: A

Solution:

Ecell=Ecello0.0592log(Zn++)(Cu++) =1.100.0592log0.10.1=1.10V .



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