Multiple Choice
What is the logarithm of the equilibrium constant,log K,at 25°C of the voltaic cell constructed from the following two half-reactions?
Fe2+ (aq) + 2e¯
Fe(s) ; E° = - 0.41V
Ag+(aq) + e-
Ag(s) ; E° = 0.80 V
A) 6.7
B) 40.9
C) 20.3
D) 13.2
E) 67.6
Correct Answer:
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2H+(aq)+ 2e- ![]()
Zn2+(aq)+ 2e- ![]()
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