Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryGalvanic cells/Nernst Equation/Concentration CellsEasy2 minPYQ_2020

ChemistryEasysingle choice

Consider the following $E^{o}$ values
$E_{F e^{3 +} / F e^{2 +}}^{o} = 0.77 V$
$E_{S n^{2 +} / S n}^{o} = - 0.14 V$
Under standard conditions the potential for the reaction
$S n (s) + 2 F e^{3 +} (a q) \to 2 F e^{2 +} (a q) + S n^{2 +} (a q)$

Options:

Answer:

Solution:

$S n (s) + 2 F e^{3 +} (a q) \to 2 F e^{2 +} (a q) + S n^{2 +} (a q)$
$E_{cell}^{o} = {(E_{reduction}^{o})}_{cathode} - {(E_{reduction}^{o})}_{anode}$
$E_{cell}^{o} = 0.77 - (- 0.14)$
$∴ E_{cell}^{o} = - 0.91 V$

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

⏱ 2mℹ️ Source: PYQ_2020

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