Răspuns:
CH3COOH+ Mg--> (CH3COO)2Mg+ H2
+ MgO--> ...................... + H2O
+ Mg(OH)2-->........................+2H2O
Explicație:
M,acid= 14n+32
14n+32g acid..........12n,gC
100g...........................40g
1200n= 560n+1280-->-n=2----> CH3COOH