Question

CaCo3-CaO-CaSO4 ....​

Answer 1

Ответ:

CaCO3=CaO+CO2

CaO+H2SO4=CaSO4+H2O

Answer 2

The chemical reactions you've mentioned involve calcium carbonate (CaCO3) being converted into calcium oxide (CaO) and then further reacting to form calcium sulfate (CaSO4). Let's break down each step:

1. CaCO3 → CaO + CO2: This reaction represents the thermal decomposition of calcium carbonate. When heated, calcium carbonate breaks down into calcium oxide (also known as quicklime) and carbon dioxide gas. The equation is as follows: CaCO3 (s) → CaO (s) + CO2 (g)

2. CaO + H2O → Ca(OH)2: Calcium oxide, or quicklime, can react with water to form calcium hydroxide, also known as slaked lime or hydrated lime. This reaction is highly exothermic and is often used in various applications, including the production of cement. The equation is as follows: CaO (s) + H2O (l) → Ca(OH)2 (aq)

3. Ca(OH)2 + H2SO4 → CaSO4 + 2H2O: Calcium hydroxide reacts with sulfuric acid to produce calcium sulfate and water. This is an acid-base reaction where the calcium hydroxide, acting as a base, reacts with sulfuric acid to form calcium sulfate, a white solid, and water. The equation is as follows: Ca(OH)2 (aq) + H2SO4 (aq) → CaSO4 (s) + 2H2O (l)

Overall, the complete reaction sequence is: CaCO3 (s) → CaO (s) + CO2 (g) CaO (s) + H2O (l) → Ca(OH)2 (aq) Ca(OH)2 (aq) + H2SO4 (aq) → CaSO4 (s) + 2H2O (l)

It's important to note that these reactions are simplified representations, and actual industrial processes may involve additional steps or conditions for specific applications.