$$\begin{gathered} \mathrm{А}) {\mathrm{CuSO}}_4 \\ \mathrm{Б}) {\mathrm{ZnSO}}_4 \\ \mathrm{В}) {\mathrm{CH}}_3\mathrm{COONa} \\ \mathrm{Г}) \mathrm{NaOH} \end{gathered}$$ 

$$\begin{gathered} 1) {\mathrm{H}}_2 \\ 2) \mathrm{Zn} \\ 3) \mathrm{Zn}, {\mathrm{H}}_2 \\ 4) \mathrm{Na} \\ 5) \mathrm{Cu}, {\mathrm{H}}_2 \\ 6) \mathrm{Cu} \\ 7) \mathrm{Na}, {\mathrm{H}}_2 \end{gathered}$$