ZnCl-ZnOH-ZnSO4-ZnOH-ZnO
ZnCl2 + 2NaOH = Zn(OH)2 + 2NaCl Zn(OH)2 + H2SO4 = ZnSO4 + 2H2O ZnSO4 + 2NaOH = Zn(OH)2 + Na2SO4 Zn(OH)2 (t)= ZnO + H2O