Make up the reaction equations in accordance with the scheme: CaCO3 – CaO – Ca (OH) 2 – CaCO3 – Ca (HCO3) 2 – CaCO3

1)CaCO3 → CaO + CO2
2)CaO + H2O → Ca(OH)2
3)Ca(OH)2 + K2CO3 → CaCO3↓ + 2KOH
4)CaCO3 + CO2 + H2O → Ca(HCO3)2
CаСО3+СО2+Н2О=Ca(2+)+2HCO3(-)
5)Ca(HCO3)2 → CaCO3↓ + CO2 + H2O
Ca(2+)+2HCO3(-)= CaCO3↓ + CO2 + H2O



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