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Fedorova61
@Fedorova61
October 2021
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Помогите с номером 20, пожалуйста
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100ethereals
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1. 2Ca+O2-->2CaO (t)
2. CaO+H2O-->Ca(OH)2
3. Ca(OH)2+CO2-->CaCO3(ос.)+H2O
4. CaCO3+CO2+H2O-->Ca(HCO3)2
5. Ca(HCO3)2+Ca(OH)2-->2CaCO3+2H2O
6.
CaCO3+2HCl-->CaCl2+H2O+CO2
CaCO3 + 2H(+) + 2Cl(-) --> Ca(2+) + 2Cl(-) + H2O + CO2
CaCO3 + 2H(+) --> Ca(2+) + H2O + CO2
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Answers & Comments
Verified answer
1. 2Ca+O2-->2CaO (t)2. CaO+H2O-->Ca(OH)2
3. Ca(OH)2+CO2-->CaCO3(ос.)+H2O
4. CaCO3+CO2+H2O-->Ca(HCO3)2
5. Ca(HCO3)2+Ca(OH)2-->2CaCO3+2H2O
6.
CaCO3+2HCl-->CaCl2+H2O+CO2
CaCO3 + 2H(+) + 2Cl(-) --> Ca(2+) + 2Cl(-) + H2O + CO2
CaCO3 + 2H(+) --> Ca(2+) + H2O + CO2