Action of Alkalis — on oxides and hydroxides of certain metals
Zinc oxide | ZnO + 2NaOH ⟶ Na2ZnO2 + H2O |
Zinc hydroxide | Zn(OH)2 + 2NaOH ⟶ Na2ZnO2 + 2H2O |
Lead [II] oxide | PbO + 2NaOH ⟶ Na2PbO2 + H2O |
Lead hydroxide | Pb(OH)2 + 2NaOH ⟶ Na2PbO2 + 2H2O |
Aluminium oxide | Al2O3 + 2NaOH ⟶ 2NaAlO2 + H2O |
Aluminium hydroxide | Al(OH)3 + KOH ⟶ KAlO2 + 2H2O |