Chemistry - Electrochemistry Question with Solution | TestHub

ChemistryElectrochemistryMiscellaneous/MixedEasy2 minPYQ_2020

ChemistryEasysingle choice

For the following cell,
$Z n (s) | Z n S O_{4} (a q) | | C u S O_{4} (a q) | C u (s)$
when the concentration of $Z n^{2 +}$ is 10 times the concentration of $C u^{2 +}$ ,
the expression for $Δ G$ (in $J {mol}^{- 1}$ ) is
[F is Faraday constant; R is gas constant; T is temperature; E°(cell) = 1.1 V]

Options:

Answer:

Solution:

$ΔG = ΔG° + 2 .303 RT {log}_{10} Q; Q = \frac{[{Zn}^{2+}]}{[{Cu}^{2 -}]}$
$= - 2F (1 .1) + 2 .303 RT {log}_{10} 10$
$= 2 .303 RT - 2 .2 F$

Stream:NTA_ABHYASSubject:ChemistryTopic:ElectrochemistrySubtopic:Miscellaneous/Mixed

⏱ 2mℹ️ Source: PYQ_2020

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