Напишу первую ступень гидролиза: K2SO3 + H2O = KHSO3 + KOH 2K[+] + SO3[2-] + H2O = 2K[+] + HSO3[-] + K[+] + OH[-] SO3[2-] + H2O = HSO3[-] + OH[-] Среда щелочная Zn(NO3)2 + H2O = Zn(OH)NO3 + HNO3 Zn[2+] + 2NO3 + H2O = Zn(OH)[+] + NO3[-] + H[+] + NO3[-] Zn[2+] + H2O = Zn(OH)[+] + H[+] Среда кислая FeCl2 + H2O = Fe(OH)Cl + HCl Fe[2+] + 2Cl[-] + H2O = Fe(OH)[+] + Cl[-] + H[+] + Cl[-] Fe[2+] + H2O = Fe(OH)[+] + H[+] Среда кислая Na3PO4 + 2H2O = NaH2PO4 + 2NaOH 3Na[+] + PO4[3-] + 2H2O = Na[+] + H2PO4[-] + 2Na[+] + 2OH[-] PO4[3-] + 2H2O = H2PO4[-] + 2OH[-] Среда щелочная