Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryGalvanic cells/Nernst Equation/Concentration CellsMedium2 minPYQ_2019
ChemistryMediumstatement

The standard Gibbs energy for the given cell reaction inkJ mol-1at298 Kis:
Zns+Cu2+aqZn2+aq+Cu(s),
E0=2 V at 298 K
(Faraday's constant ,F=96000 C mol-1)

Options:

Answer:
D
Solution:

For the reaction,
Cu2+aq+ZnsZn2+aq+Cus
n=2, two electrons are exchanged
Go=-nFEo
=-2×96000×2=-384000
=-384 kJ

Stream:JEESubject:ChemistryTopic:ElectrochemistrySubtopic:Galvanic cells/Nernst Equation/Concentration Cells
2mℹ️ Source: PYQ_2019

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