Question

Completeaza si egaleaza ecuatiile reactiilor de mai jos:
Na(OH)+ ? = Na2SO4+ ?
Cu(OH)2+ ? = CuSO4+?
? + CuSO4 = Cu(OH)2+ ?
?+ CO2 = Na2CO3+?
Cu(OH)2 =?+?
?+ HCl = AlCl3+ H2O
Al2(SO4)3+ ? = Al(OH)3+ ?

Answer 1

NaOH+H2SO4 = Na2SO4+H2
Cu(OH)2+ Na2SO4 = CuSO4+ Na(OH)2
Cu(OH)2 = Cu+H2O
Al(OH)2 + HCl = AlCl3+ H2O
Al2(SO4)3 + Na(OH)2 = Al(OH)3 + Na2SO4