$A$ secondary cell is one that:

$A^{2+}_{(aq.)} + 2e^- \to A_{(s)}$ ; $E^{\circ} = 0.8 \ V$
$B^{3+}_{(aq.)} + 3e^- \to B_{(s)}$ ; $E^{\circ} = 0.6 \ V$
Using the above information,find the ion which will be deposited first at the cathode if a solution containing $A^{2+}_{(aq.)}$ and $B^{3+}_{(aq.)}$ is electrolysed.

Which of the following reactions is used to make a fuel cell?

$A$ saturated solution of $KNO_3$ with agar-agar is used to make a 'salt-bridge' because

Which relation is correct for $\Lambda^0_{m(H_2O)}$?

Which statement is correct for a fuel cell?