Question

The cell reaction of the galvanic cell: $Cu(s)/C{u}^{2+}(aq)||H{g}^{2+}(aq)|Hg(l)$

• A. $Hg+C{u}^{2+}\to H{g}^{2+}+Cu$
• B. $Hg+C{u}^{2+}\to C{u}^{+}+H{g}^{+}$
• C. $Cu+Hg\to CuHg$
• D. $Cu+H{g}^{2+}\to C{u}^{2+}+Hg$

Answer 1

Answer: (D)

Galvanic cell is $Cu(s)/C{u}^{2+}(aq)||H{g}^{2+}(aq)|Hg$ In the above cell oxidation of copper and reduction of mercury takes place. Its cell reaction is written as: $Cs(s)+H{g}^{2+}(aq)\to C{u}^{2+}(aq)+Hg$