The standard EMF of Daniell cell is $1.10$ volt. The maximum electrical work (in $\mathrm{kJ}$ ) obtained…
The standard EMF of Daniell cell is $1.10$ volt. The maximum electrical work (in $\mathrm{kJ}$ ) obtained from the Daniell cell is
- 213.2
- 211.3
- 212.3
- 212.2
Solution
- Standard EMF (E) = 1.10 volts
- Number of electrons transferred \((\mathrm{n})\) in the Daniell cell reaction \(=2\) (from the balanced reaction: \(\left.\mathrm{Zn}+\mathrm{Cu}^{2+} ightarrow \mathrm{Zn}^{2+}+\mathrm{Cu}ight)\)
$\Delta \mathrm{G}=-\mathrm{nF} \mathrm{E}^{\circ}{ }_{\text {cell }}=-2 \times 96500 \times 1.1 \mathrm{~J}=212.3 \mathrm{~kJ}$.
Asked in: JEE-TOPICTESTS-CHEMISTRY
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