Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryGalvanic cells/Nernst Equation/Concentration CellsHard2 minPYQ_2017
ChemistryHardsingle choice

In the electrochemical cell:

ZnZnSO40.01MCuSO41.0 MCu,the emf of this Daniel cell isE1. When the concentrationZnSO4is changed to1.0Mand that ofCuSO4changed to0.01M,the emf changes toE2. From the following, which one is the relationship betweenE1andE2? (Given,RTF=0.059)NEET 2017

Options:

Answer:
C
Solution:

ZnZnSO40.01 MCuSO41.0MCu

E=Ecello−2.303RT2Flog[Zn+2][Cu+2]
∴ E1=Ecello-2.303RT2×F×log⁡0.011

When concentrations are changed

∴ E2=Ecello-2.303RT2F×log⁡10.01

i.e.,E1>E2

Stream:NEETSubject:ChemistryTopic:ElectrochemistrySubtopic:Galvanic cells/Nernst Equation/Concentration Cells
⏱ 2mℹ️ Source: PYQ_2017

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