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ChemistryElectrochemistryGalvanic cells/Nernst Equation/Concentration CellsHard2 minPYQ_2019
ChemistryHardsingle choice

For the cell reaction

2Fe3+aq+2I-aq→2Fe2+aq+I2aq

Ecell0=0.24 V at 298 K. The standard Gibbs energy ΔrG- of the cell reaction is:

[Given that Faraday constant F=96500 Cmol-1 ]

NEET 2019 (All India)

Options:

Answer:
A
Solution:

For the cell reaction
2Fe3+aq+2I-aq→2Fe2+aq+I2aq

n=2

F=96500

Ecello=0.24 V

ΔGo=-nFEcello=-2×96500×0.24=-46320 J=-46.32 kJ

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

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