Redox Reactions And Electrochemistry Ques 213

Question: The standard e.m.f. of a call, involving one electron change is found to be 0.591 V at 25°C. The equilibrium constant of the reaction is ( F=96,500 C mol1; R=8.314 JK1mol1) [AIEEE 2004]

Options:

A) 1.0×1010

B) 1.0×105

C) 1.0×101

D) 1.0×1030

Show Answer

Answer:

Correct Answer: A

Solution:

ECell=Ecell00.0591nlogKc At 298 K ECell=0 O=0.5910.0591nlogKc logKc=0.591×10.0591=10 ; Kc=Anti log10=1×1010 .



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