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Ipurpleyou1
@Ipurpleyou1
July 2022
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Решите цепочку превращений
Химия 8 класс
CH4<=C=>CO2=>H2CO3=>CaCL2=>CaCO3
под С еще K2Co3
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dunyaims
1)CaO+CO2-->CaCO3
CaCL2+Na2CO3-->CaCO3+2NaCL
Ca+Na2CO3-->CaCO3+2Na
2)
C+O2-->CO2
CO2+H2O-->H2CO3
H2CO3+2KCL-->K2CO3+2HCL
K2CO3-->K2O+CO2
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Answers & Comments
CaCL2+Na2CO3-->CaCO3+2NaCL
Ca+Na2CO3-->CaCO3+2Na
2)
C+O2-->CO2
CO2+H2O-->H2CO3
H2CO3+2KCL-->K2CO3+2HCL
K2CO3-->K2O+CO2