Question

Al--AlCl3--Al(OH)3--Al2(SO4)3--X--Al2O3
CaCO3--CaO--Ca(OH)2--Ca(HCO3)2--X(газ)

Answer 1

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

Answer 2

спасибо