Sn4++2Hg2+=Sn2++2Hg+\mathrm{Sn}^{4+}+2 \mathrm{Hg}^{2+}=\mathrm{Sn}^{2+}+2 \mathrm{Hg}^{+}Sn4++2Hg2+=Sn2++2Hg+
Sn2++2Hg+=Sn4++2Hg2+\mathrm{Sn}^{2+}+2 \mathrm{Hg}^{+}=\mathrm{Sn}^{4+}+2 \mathrm{Hg}^{2+}Sn2++2Hg+=Sn4++2Hg2+
Sn2++2Hg2+=Sn4++2Hg+\mathrm{Sn}^{2+}+2 \mathrm{Hg}^{2+}=\mathrm{Sn}^{4+}+2 \mathrm{Hg}^{+}Sn2++2Hg2+=Sn4++2Hg+
Sn4++2Hg4+=Sn2++2Hg2+\mathrm{Sn}^{4+}+2 \mathrm{Hg}^{4+}=\mathrm{Sn}^{2+}+2 \mathrm{Hg}^{2+}Sn4++2Hg4+=Sn2++2Hg2+