CH3COOH+Zn CH3COOH+CuO CH3COOH+CACO3
Если не изменяет память,то так:D
1)2CH3COOH+Zn->(CH3COO)2Zn+H2
2)CH3COOH+CuO->(CH3COO)2Cu+H2O
3)2CH3COOH+CACO3-> (CH3COO)2Ca +H2O + CO2