The standard oxidation potential of Ni/Ni2+ electrode is 0.3 V. If th – McqOptions

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1.	The standard oxidation potential of Ni/Ni2+ electrode is 0.3 V. If this is combined with a hydrogen electrode in acid solution, at what pH of the solution with the measured e.m.f. be zero at 25°C? (Assume [Ni2+] = 1M)
A.	5.08
B.	4
C.	4.5
D.	5.25
Answer» B. 4

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