№1
NiSO4 + 2NaOH = Ni(OH)2↓ + Na2SO4- М.И.У
Ni[2+] + SO4[2-] + 2Na[+] + 2OH[-] = Ni(OH)2↓ + 2Na[+] + SO4[2-]
Ni[2+] + 2OH[-] = Ni(OH)2↓
№2
Be(OH)2↓+2NaOH=2H2O+Na2BeO2
Be(OH)2↓+2Na[+]+2OH[-] = 2H2O+2 Na[+]+BeO2[-]
Be(OH)2↓ +2 OH[-] = BeO2[-] + 2H2O
