In the reaction $Cu_{(s)} + 2Ag^{+}_{(aq)} \to Cu^{2+}_{(aq)} + 2Ag_{(s)}$,the reduction half-cell reaction is:

In the Daniell cell,$Zn|Zn^{2+} || Cu^{2+}|Cu$,when an external voltage is applied such that $E_{\text{external}} > E_{\text{cell}}$,current flows from.........

For the electrochemical cell $M \mid M^{2+} \parallel X \mid X^{2-}$,if $E^{\circ}_{(M^{2+} / M)} = 0.46 \ V$ and $E^{\circ}_{(X / X^{2-})} = 0.34 \ V$,which of the following is correct?

The standard electrode potential of $Zn^{2+}/Zn$ is $-0.76\, V$ and that of $Cu^{2+}/Cu$ is $0.34\, V$. The emf $(V)$ and the free energy change $(kJ\, mol^{-1})$,respectively for a Daniell cell will be

The extent of charge of a lead accumulator is determined by

Which of the following net cell reactions takes place in a galvanic cell containing a copper electrode and a standard hydrogen electrode $(SHE)$? Given: $E^{\circ}(Cu^{2+}_{(aq)} \mid Cu_{(s)}) = +0.34 \ V$.