NaOH + Al = NaAlO2 + H2
NaOH + Fe = Fe(OH)2
NaOH + CoCl2 = Co(OH)2 + 2NaCl
NaOH + Fe(SO4)3 = Fe(OH)3 + 3Na2SO4
NaOH + NaCl = Na2CO3 + H2O
NaOH + Al = NaAlO2 + H2
NaOH + Fe = Fe(OH)2
NaOH + CoCl2 = Co(OH)2 + 2NaCl
NaOH + Fe(SO4)3 = Fe(OH)3 + 3Na2SO4
NaOH + NaCl = Na2CO3 + H2O