а) CaO + H2O = Ca(OH)2
Ca(OH)2 + CO2 = CaCO3 + H2O
CaCO3 + H2O + CO2 = Ca(HCO3)2
б) Al(OH)3 + 3HCl = AlCl3 + 3H2O
AlCl3 + 3KOH = Al(OH)3 + 3KCl
2Al(OH)3 = (t) Al2O3 + 3H2O
в) CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 = (t) CuO + H2O
CuO + H2 = Cu + H2O
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Answers & Comments
а) CaO + H2O = Ca(OH)2
Ca(OH)2 + CO2 = CaCO3 + H2O
CaCO3 + H2O + CO2 = Ca(HCO3)2
б) Al(OH)3 + 3HCl = AlCl3 + 3H2O
AlCl3 + 3KOH = Al(OH)3 + 3KCl
2Al(OH)3 = (t) Al2O3 + 3H2O
в) CuCl2 + 2NaOH = Cu(OH)2 + 2NaCl
Cu(OH)2 = (t) CuO + H2O
CuO + H2 = Cu + H2O