Question

CaCO3 + HCl=? Na2CO3 + Ca(NO3)2=? CaO+ CO2=? Ca(H3CO)2 + Ca(OH)2

Answer 1

Ответ:

Объяснение:

CaCO3 + 2HCl = CaCl2 + CO2↑ + H2O

Na2CO3 + Ca(NO3)2 = CaCO3 + 2NaNO3

CaO + CO2 = CaCO3

Ca(HCO3)2 + Ca(OH)2 = 2CaCO3 + 2H2O

Answer 2

Let's balance the chemical equations:

1. CaCO₃ + 2HCl → CaCl₂ + H₂O + CO₂

2. Na₂CO₃ + Ca(NO₃)₂ → 2NaNO₃ + CaCO₃

3. CaO + CO₂ → CaCO₃

4. Ca(H₃CO)₂ + Ca(OH)₂ → 2CaCO₃ + 2H₂O

Please note that the fourth equation is a bit unusual and not a standard reaction. It seems to involve calcium acetate (Ca(H₃CO)₂) reacting with calcium hydroxide (Ca(OH)₂) to form calcium carbonate (CaCO₃) and water (H₂O). This is not a typical reaction and might not occur under normal circumstances. Always consult reliable chemical sources for confirmed reactions.