Fe(OH)2 + Na2SO4 = FeSO4 + 2NaOH
Fe(OH)2 + 2Na[+] + SO4[2-] = Fe[2+] + SO4[2-] + 2Na[+] + 2OH
Fe(OH)2 + = Fe[2+] + 2OH
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
Fe[3+] + 3Cl[-] + 3Na[+] + 3OH[-] = Fe(OH)3↓ + 3Na[+] + 3Cl[-]
Fe[3+] + 3OH[-] = Fe(OH)3↓
Fe(OH)2 + Na2SO4 = FeSO4 + 2NaOH
Fe(OH)2 + 2Na[+] + SO4[2-] = Fe[2+] + SO4[2-] + 2Na[+] + 2OH
Fe(OH)2 + = Fe[2+] + 2OH
FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl
Fe[3+] + 3Cl[-] + 3Na[+] + 3OH[-] = Fe(OH)3↓ + 3Na[+] + 3Cl[-]
Fe[3+] + 3OH[-] = Fe(OH)3↓