Na2CО3 + Fe2О3 = 2NaFeО2 + CО2
Na2CО3 + Са (ОН)2 = 2NaOH + CaCО3
Na+ H20-->NaOH
Cu(OH)2+Na2SO4-->2NAOH + CuSO4
Na2CО3 + Fe2О3 = 2NaFeО2 + CО2
Na2CО3 + Са (ОН)2 = 2NaOH + CaCО3
Na+ H20-->NaOH
Cu(OH)2+Na2SO4-->2NAOH + CuSO4