А) ALCL3 + 3NaOH = 3NaCL + AL(OH)3
2AL(OH)3 = AL2O3 + 3H2O AL2O3 + 3H2SO4 = AL2(SO4)3 + 3H2O AL2(SO4)3 + 6NaOH = 2AL(OH)3 + 3Na2SO4 AL(OH)3 + HCL = AL(OH)2CL + H2O
Б) Na2O + H2O = 2NaOH
NaOH + H2SO4 = NaHSO4 + H2O NaHSO4 + NaOH = Na2SO4 + H2O 2NaHSO4 → Na2SO4 + H2O + SO3↑ (нагревание)
В) CaCO3 → CaO + CO2 (нагревание)
CaO + H2O → Ca(OH)2 Ca(OH)2 + 2CO2 → Ca(HCO3)2 Ca(HCO3)2 + 2HCl → CaCl2 + 2H2O + 2CO2↑
А) ALCL3 + 3NaOH = 3NaCL + AL(OH)3
2AL(OH)3 = AL2O3 + 3H2O
AL2O3 + 3H2SO4 = AL2(SO4)3 + 3H2O
AL2(SO4)3 + 6NaOH = 2AL(OH)3 + 3Na2SO4
AL(OH)3 + HCL = AL(OH)2CL + H2O
Б) Na2O + H2O = 2NaOH
NaOH + H2SO4 = NaHSO4 + H2O
NaHSO4 + NaOH = Na2SO4 + H2O
2NaHSO4 → Na2SO4 + H2O + SO3↑ (нагревание)
В) CaCO3 → CaO + CO2 (нагревание)
CaO + H2O → Ca(OH)2
Ca(OH)2 + 2CO2 → Ca(HCO3)2
Ca(HCO3)2 + 2HCl → CaCl2 + 2H2O + 2CO2↑