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ChemistryElectrochemistryGalvanic cells/Nernst Equation/Concentration CellsEasy2 minPYQ_2015

ChemistryEasysingle choice

Assertion : Zinc displaces copper from copper sulphate solution. Reason : The $E_{298 K}^{\circ}$ of $Zn$ is $- 0.76 V$ and that of $Cu$ is $+ 0.34 V$ .

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Answer:

Solution:

$: Zn_{(s)} + Cu_{(a q)}^{2 +} \to Zn_{(a q)}^{2 +} + Cu_{(s)} E_{Cu^{2 +} / Cu}^{o} = 0.34 V, E_{Zn^{2 +} / Zn} = - 0.76 V$ Higher reduction potential of $Cu^{2 +}$ ion than $Zn^{2 +}$ ion shows that $Cu^{2 +}$ ion has more tendency to undergo reduction.

Stream:AIIMSSubject:ChemistryTopic:ElectrochemistrySubtopic:Galvanic cells/Nernst Equation/Concentration Cells

⏱ 2mℹ️ Source: PYQ_2015

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