Question

CaCO3 --> CaO --> Ca(OH)2 --> Ca(NO3)2​

Answer 1

Ответ:

Объяснение:

CaCO3 -> CaO + CO2

CaO + H2O = Ca(OH)2

Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O

Answer 2

The chemical reactions you've listed involve calcium carbonate (CaCO3) and its transformation into various compounds. Let's break down each step:

1. CaCO3 (Calcium Carbonate) → CaO (Calcium Oxide): This is a thermal decomposition reaction. When calcium carbonate is heated strongly, it breaks down into calcium oxide (also known as quicklime) and carbon dioxide gas.

   CaCO3(s) → CaO(s) + CO2(g)

2. CaO (Calcium Oxide) → Ca(OH)2 (Calcium Hydroxide): Calcium oxide (quicklime) is reacted with water to produce calcium hydroxide (slaked lime). This reaction is highly exothermic and is often used to produce calcium hydroxide for various industrial and agricultural applications.

   CaO(s) + H2O(l) → Ca(OH)2(aq)

3. Ca(OH)2 (Calcium Hydroxide) → Ca(NO3)2 (Calcium Nitrate): Calcium hydroxide reacts with nitric acid (HNO3) to form calcium nitrate. This is an acid-base reaction where calcium hydroxide, a base, reacts with nitric acid, an acid, to produce calcium nitrate and water.

   Ca(OH)2(aq) + 2 HNO3(aq) → Ca(NO3)2(aq) + 2 H2O(l)

In the final reaction, calcium carbonate is transformed through heating, hydration, and acid-base reactions to form calcium nitrate, a water-soluble salt.

It's important to note that while these reactions are theoretically possible, practical considerations such as reaction conditions, concentrations, and other factors might affect the outcomes. Always exercise caution when performing chemical reactions and handle materials safely.