написать уравнения реакции:
(CaHCO3)2->CaCO3->CO2->Na2CO3->NaHCO3
(CaHCO3)2=2СaCO3+H2
CaCO3=CO2+CaO
CO2+Na2O=Na2CO3
2Na2CO3+2H2=4NaHCO3
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(CaHCO3)2=2СaCO3+H2
CaCO3=CO2+CaO
CO2+Na2O=Na2CO3
2Na2CO3+2H2=4NaHCO3