Составьте уравнения следующих превращений CaCO3--1->CaCl2--2-->Сa--3-->CaO--4-->Ca(OH)2--5-->CaCO3--6-->Ca(HCO3)2--7-->CaCO3.Нужно срочно!!!
CaCO3 + BaCl2 = CaCl2 + BaCO3CaCl2 + 2K = 2KCl + Ca 2Ca + O2 = 2CaO CaO + H2O = Ca(OH)2
Ca(OH)2 + Na2CO3 = CaCO3 + 2NaOH CaCO3 + H2O + CO2 = Ca(HCO3)2 Ca(HCO3)2 + Ca(OH)2 = 2CaCO3 + 2H2O
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Answers & Comments
CaCO3 + BaCl2 = CaCl2 + BaCO3
CaCl2 + 2K = 2KCl + Ca
2Ca + O2 = 2CaO
CaO + H2O = Ca(OH)2
Ca(OH)2 + Na2CO3 = CaCO3 + 2NaOH
CaCO3 + H2O + CO2 = Ca(HCO3)2
Ca(HCO3)2 + Ca(OH)2 = 2CaCO3 + 2H2O