Q.

For the reaction, Mn+aq+ne-→M(s), select the best suitable representation of Nernst equation, when the solid M is taken.

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a

EMn+/M=E(Mn+/M)o-RTnFIn MMn+

b

EMn+/M=E(Mn+/M)o-RTnFIn 1Mn+

c

EMn+/M=E(Mn+/M)o-RTnFIn Mn+M

d

EMn+/M=E(Mn+/M)o-RTnFIn Mn+

answer is B.

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Detailed Solution

Electrode potential of an electrode is measured with respect to standard hydrogen electrode by the expressionEMn+/M=EMn+/Mo-RTnFIn MMn+but concentration of solid M is taken as unity So,           EMn+/M=EMn+/Mo-RTnFIn 1Mn+
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