If the temperature coefficient (∂E∂T) is zero for a cell reaction then ΔS is:
zero
positive
negative
independent of (∂E∂T)
A
positive
B
zero
C
negative
D
independent of (∂E∂T)
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Solution
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(ΔS) ΔS=nF(dEdT)p ΔS∝(dEdT)p So when (dEdT)p=0, ΔS=0 ΔH=−nF[Ecell−T(dEdT)p], so ΔH≠0 ΔG=ΔH−TΔS; if ΔS=0, ΔG=ΔH≠0
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