Điện cực nào là điện cực Calomel (SCE):

\[Ag\left( r \right).AgCl\left( r \right)\left| {KClLa\left. M \right\|} \right.\]

\[Pt\left| {{H_2}} \right.\left( {P = 1atm} \right).\left[ {{H^ + }} \right] = 1,000\left. M \right\|\]

\[Zn\left( r \right)\left| {ZnC{l_2}} \right.\left. {AM} \right|\]

\[Hg\left( I \right).H{g_2}C{l_2}\left( r \right)\left| {KClaM\left\| {Pt\left| {{H_2}} \right.} \right.} \right.\left( {P = 1atm} \right).\left[ {{H^ + }} \right] = 1,00\]

\[Hg\left( I \right).H{g_2}C{l_2}\left( r \right)\left| {KCla\left. M \right\|} \right.\]