Al_{2}^{+3}O_{3}+ 3Cu^{0} " alt="2Al^{0}+ 3Cu^{+2}O--> Al_{2}^{+3}O_{3}+ 3Cu^{0} " align="absmiddle" class="latex-formula">
Al^{+3} " alt="Al^{0} -3e---> Al^{+3} " align="absmiddle" class="latex-formula"> | | 2 - ок-ние- в-ль
| 6 |
Cu^{0}" alt="Cu^{+2} +2e---> Cu^{0}" align="absmiddle" class="latex-formula"> | | 3--восст-е -ок-ль