2Аl + 6HCl = 2AlCl3 + 3H2
AlCl3 + 3NaOH = 3NaCl + Al(OH)3
2Al(OH)3 + 3H2SO4 = Al2(SO4)3 + 6H2O
Al2(SO4)3 + 6NaOH = 2Al(OH)3 + 3Na2SO4
2Al(OH)3 = Al2O3 + 3H2O
CaCO3 = CaO + CO2
CaO + H2O = Ca(OH)2
Ca(OH)2 + 2CO2 = Ca(HCO3)2
Ca(HCO3)2 + 2HCl = CaCl2 + 2CO2 + 2H2O