KClO3 => (t^o) KCl + 3/2 O2
Cu + 1/2 O2 => (t^o) CuO
2HCl + Zn => ZnCl2 + H2
CuO + H2 => (t^o) Cu + H2O
CuO + HCl => CuCl2 + H2O
\(Zn+CuSO_4-->ZnSO_4+Cu\)
\(2KClO_3--to->2KCl+3O_2\)
\(Zn+2HCl-->ZnCl_2+H_2\)
\(2Cu+O_2--to->CuO\)
\(CuO+H_2-to->Cu+H_2O\)
\(CuO+2HCl-->CuCl_2+H_2O\)