Which of the following will not displace hydrogen from dilute acids?

The reaction $\frac{1}{2} H_{2(g)} + AgCl_{(s)} \rightleftharpoons H^{+}_{(aq)} + Cl^{-}_{(aq)} + Ag_{(s)}$ occurs in which of the given galvanic cell?

Based on the reaction $\frac{4}{3} \, Al + O_2 \to \frac{2}{3} \, Al_2O_3$,with $\Delta G = -827 \, kJ \, mol^{-1}$ of $Al_2O_3$,what is the minimum $e.m.f.$ required for the electrolysis? $(F = 96500 \, C \, mol^{-1})$

Draw the diagram of a galvanic cell and indicate the direction of flow of electrons and current for the cell constructed using $Al|Al^{3+}$ and $Ag^{+}|Ag$ half-cells,given $E^o_{Al^{3+}|Al} = -1.66 \ V$ and $E^o_{Ag^{+}|Ag} = 0.80 \ V$.

Light can be converted into electricity with the help of a ......... .

The cell reaction of the following cell will be spontaneous if $Pt|Cl_{2(P_1 \, atm)}|Cl^{-}_{(1 \, M)}||Cl^{-}_{(1 \, M)}|Cl_{2(P_2 \, atm)}|Pt$: