Redox Reactions And Electrochemistry Ques 176

Question: The oxidation potentials of following half-cell reactions are given ZnZn2++2e;Eo=0.76V , FeFe2++2e;Eo=0.44V what will be the emf of cell, whose cell-reaction is Fe2+(aq)+ZnZn2+(aq)+Fe [MP PMT 2003]

Options:

A) - 1.20 V

B) + 0.32 V

C) - 0.32 V

D) + 1.20 V

Show Answer

Answer:

Correct Answer: B

Solution:

Fe+2+ZnZn2++Fe EMF=EcathodeEanode =0.44(0.76)=+0.32,V .



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