Question

Ca---CaSO4---Ca(OH)2---- Ca CO3--- Ca Cl2​

Answer 1

Ответ:

Ca+MgSO4=Mg+CaSO4

CaSO4+Mg(OH)2=MgSO4+Ca(OH)2

Ca(OH)2+K2CO3=CaCO3+2KOH

CaCO3+2NaCl=Na2CO3+CaCl2

Answer 2

It appears you've provided a sequence of chemical reactions involving various calcium compounds. Let's break down the reactions step by step:

1. CaCO3 → CaO + CO2 This reaction involves the decomposition of calcium carbonate (CaCO3) into calcium oxide (CaO) and carbon dioxide (CO2) when heated.

2. CaO + H2O → Ca(OH)2 Here, calcium oxide (CaO) reacts with water (H2O) to form calcium hydroxide (Ca(OH)2).

3. Ca(OH)2 + H2SO4 → CaSO4 + 2H2O This reaction involves the reaction of calcium hydroxide (Ca(OH)2) with sulfuric acid (H2SO4) to produce calcium sulfate (CaSO4) and water (H2O).

4. CaSO4 + 2HCl → CaCl2 + H2SO4 In this reaction, calcium sulfate (CaSO4) reacts with hydrochloric acid (HCl) to form calcium chloride (CaCl2) and sulfuric acid (H2SO4).

So, the overall sequence of reactions is as follows: CaCO3 → CaO + CO2 CaO + H2O → Ca(OH)2 Ca(OH)2 + H2SO4 → CaSO4 + 2H2O CaSO4 + 2HCl → CaCl2 + H2SO4

This sequence demonstrates the transformation of calcium carbonate (CaCO3) into calcium chloride (CaCl2) via intermediate steps involving calcium oxide (CaO), calcium hydroxide (Ca(OH)2), and calcium sulfate (CaSO4).