3NaOH + AlCl3 -> Al(OH)3 + 3NaCl2NaOH + Cu(NO3)2 -> Cu(OH)2 + 2NaNO32NaOH + HCl -> Na2O + 2H2O2NaOH + H2SO4 -> Na2SO4 + 2H2O2NaOH + HNO3 -> NaNO3 + H2O2NaOH + KOH -> K2O + 2H2O
3NaOH + AlCl3 -> Al(OH)3 + 3NaCl
2NaOH + Cu(NO3)2 -> Cu(OH)2 + 2NaNO3
2NaOH + HCl -> Na2O + 2H2O
2NaOH + H2SO4 -> Na2SO4 + 2H2O
2NaOH + HNO3 -> NaNO3 + H2O
2NaOH + KOH -> K2O + 2H2O