Write the reaction equation: Ca-Ca (OH) 2-CaCO3-CaO- Ca (OH) 2-CaCl2 MgCl2-MgCO3-Mg (HCO3) -MgCO3-CO2-Mg2CO3
March 27, 2021 | education
| Ca → Ca (OH) 2 → CaCO3 → CaO → Ca (OH) 2 → CaCl2
1) Ca + 2H2O → Ca (OH) 2 ↓ + H2 ↑ (substitution reaction);
2) Ca (OH) 2 + Na2CO3 → CaCO3 ↓ + 2NaOH (exchange reaction);
3) CaCO3 ↓ → CaO + CO2 ↑ (decomposition reaction);
4) CaO + H2O → Ca (OH) 2 ↓ (compound reaction);
5) Ca (OH) 2 + 2HCl → CaCl2 + 2H2O (exchange reaction).
MgCl2 → MgCO3 → Mg (HCO3) → MgCO3 → CO2 → MgCO3
1) MgCl2 + CO2 + H2O → MgCO3 + 2HCl (exchange reaction);
2) MgCO3 + CO2 + H2O → Mg (HCO3) 2 (compound reaction);
3) Mg (HCO3) 2 → MgCO3 + H2O + CO2 (decomposition reaction);
4) MgCO3 + 2HCl → MgCl2 + CO2 + H2O (exchange reaction);
5) CO2 + Mg (OH) 2 → H2O + MgCO3 (exchange reaction).
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