Question

CaO-Ca(OH)2-CaCO3-Ca(NO3)2-HNO3 РЕШИТЕ ЦЕПОЧКУ УРАВНЕНИЙ ПЖПЖПЖ​

Answer 1

Ответ:

CaO + H₂O = Ca(OH)₂

Ca(OH)₂ + CO₂ = CaCO₃ + H₂O

CaCO₃ + 2HNO₃ = Ca(NO₃)₂ + CO₂ + H₂O

Ca(NO₃)₂ + 2H₂SO₄ конц =2HNO₃ + Ca(HSO₄)₂

Answer 2

Chemical Reactions Involving Calcium Compounds

When calcium oxide (CaO) reacts with water (H2O), it forms calcium hydroxide (Ca(OH)2) through the following chemical equation:

CaO + H2O → Ca(OH)2

Calcium hydroxide (Ca(OH)2) can further react with carbon dioxide (CO2) to produce calcium carbonate (CaCO3) in the following chemical equation:

Ca(OH)2 + CO2 → CaCO3 + H2O

Calcium carbonate (CaCO3) can then react with nitric acid (HNO3) to form calcium nitrate (Ca(NO3)2), as shown in the chemical equation:

CaCO3 + 2HNO3 → Ca(NO3)2 + CO2 + H2O

Finally, calcium nitrate (Ca(NO3)2) can be obtained by the reaction of calcium carbonate (CaCO3) with nitric acid (HNO3) as follows:

CaCO3 + 2HNO3 → Ca(NO3)2 + CO2 + H2O

Conclusion

The chemical reactions involving calcium compounds, as described above, illustrate the transformation of calcium oxide into calcium nitrate through a series of intermediate reactions.