Relation between Gibbs free energy, Equilibrium constant and emf of cell
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CHXII03:ELECTROCHEMISTRY

330450 The equilibrium constant for the reaction:
\[\begin{array}{l}
{\rm{Cu(s)}} + {\rm{2A}}{{\rm{g}}^ + }{\rm{(aq)}} \to {\rm{C}}{{\rm{u}}^{2 + }}{\rm{(aq)}} + {\rm{2Ag(s);}}\\
{\rm{E}}^\circ \,{\rm{ = }}\,{\rm{0}}{\rm{.46V}}
\end{array}\] at 298 K is

1 \({\rm{4}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{10}}}}\)
2 \({\rm{2}}{\rm{.4 \times 1}}{{\rm{0}}^{{\rm{10}}}}\)
3 \({\rm{2}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{10}}}}\)
4 \({\rm{3}}{\rm{.9 \times 1}}{{\rm{0}}^{{\rm{15}}}}\)
CHXII03:ELECTROCHEMISTRY

330451 A lead storage battery is charged

1 Sulphuric acid is regenerated
2 The conc. Of \({{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\)
3 Lead dioxide dissolves
4 Lead electrode becomes coated with lead sulphate.
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CHXII03:ELECTROCHEMISTRY

330450 The equilibrium constant for the reaction:
\[\begin{array}{l}
{\rm{Cu(s)}} + {\rm{2A}}{{\rm{g}}^ + }{\rm{(aq)}} \to {\rm{C}}{{\rm{u}}^{2 + }}{\rm{(aq)}} + {\rm{2Ag(s);}}\\
{\rm{E}}^\circ \,{\rm{ = }}\,{\rm{0}}{\rm{.46V}}
\end{array}\] at 298 K is

1 \({\rm{4}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{10}}}}\)
2 \({\rm{2}}{\rm{.4 \times 1}}{{\rm{0}}^{{\rm{10}}}}\)
3 \({\rm{2}}{\rm{.0 \times 1}}{{\rm{0}}^{{\rm{10}}}}\)
4 \({\rm{3}}{\rm{.9 \times 1}}{{\rm{0}}^{{\rm{15}}}}\)
CHXII03:ELECTROCHEMISTRY

330451 A lead storage battery is charged

1 Sulphuric acid is regenerated
2 The conc. Of \({{\rm{H}}_{\rm{2}}}{\rm{S}}{{\rm{O}}_{\rm{4}}}\)
3 Lead dioxide dissolves
4 Lead electrode becomes coated with lead sulphate.
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