(D) Electrical work done is given by $W = nFE_{cell}$, where $nF$ is the charge transferred and $E_{cell}$ is the potential difference. Work done is t

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If the reaction is carried out reversibly, the electrical work done is equal to the ratio of charge and potential difference through which the charge is moved.

(D) Electrical work done is given by $W = nFE_{cell}$, where $nF$ is the charge transferred and $E_{cell}$ is the potential difference. Work done is the product of charge and potential difference $(W = q \times V)$, not the ratio. Therefore, the statement in option $D$ is incorrect.

Class 12 Chemistry Electrochemistry Electrochemical cells

Medium

For a general redox reaction:
Anode: $Red_1 \to Ox_1^{n_1+} + n_1 e^-$
Cathode: $Ox_2^{n_2+} + n_2 e^- \to Red_2$
Which of the following statements is incorrect?

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A
The overall reaction can be written as $n_2 Red_1 + n_1 Ox_2^{n_2+} \rightleftharpoons n_2 Ox_1^{n_1+} + n_1 Red_2$
B
The electrons do not appear in the overall reaction because electrons produced at the anode are consumed at the cathode.
C
Here $n$ is the number of electrons transferred in the redox reaction.
D
If the reaction is carried out reversibly, the electrical work done is equal to the ratio of charge and potential difference through which the charge is moved.