Question

Ca(OH)2←Ca→CaO→Ca(OH)2→Ca(NO3)2→CaSO4​

Answer 1

Ответ:

Ca + 2H2O = Ca(OH)2 + H2

2Ca + O2 = 2CaO

CaO + H2O = Ca(OH)2

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

Ca(NO3)2 + K2SO4 = CaSO4 + 2KNO3

Answer 2

It seems like you're describing a series of chemical reactions involving calcium hydroxide (Ca(OH)2), calcium oxide (CaO), calcium nitrate (Ca(NO3)2), and calcium sulfate (CaSO4). Let's break down the reactions step by step:

1. Ca(OH)2 → CaO (Calcium hydroxide to calcium oxide): This reaction involves the decomposition of calcium hydroxide to produce calcium oxide and water: $Ca(OH)_2 \rightarrow CaO + H_2O$

2. CaO → Ca(OH)2 (Calcium oxide to calcium hydroxide): This is a reaction where calcium oxide reacts with water to form calcium hydroxide: $CaO + H_2O \rightarrow Ca(OH)_2$

3. Ca(OH)2 → Ca(NO3)2 (Calcium hydroxide to calcium nitrate): Calcium hydroxide reacts with nitric acid to produce calcium nitrate and water: $Ca(OH)_2 + 2HNO_3 \rightarrow Ca(NO_3)_2 + 2H_2O$

4. Ca(NO3)2 → CaSO4 (Calcium nitrate to calcium sulfate): This reaction involves calcium nitrate reacting with sulfuric acid to produce calcium sulfate, nitric acid, and water: $Ca(NO_3)_2 + H_2SO_4 \rightarrow CaSO_4 + 2HNO_3$

Each of these reactions represents a different chemical transformation involving calcium and various compounds. If you have specific questions or need further clarification about any of these reactions, feel free to ask!