Question

Fe-Fe2O3-FeCl3-Fe(OH)3-Fe2(SO4)3 C-CO2-H2CO3-CaCO3-CaO

Answer 1

Fe -> Fe2O3 -> FeCl3 -> Fe(OH)3 -> Fe2(SO4)3

4Fe + 3O2 = 2Fe2O3

Fe2O3 + 6HCl = 2FeCl3 + 3H2O

FeCl3 + 3NaOH = Fe(OH)3 + 3NaCl

2Fe(OH)3 + 3H2SO4 = Fe2(SO4)3 + 6H2O

 

C -> CO2 -> H2CO3 -> CaCO3 -> CaO

С + O2 = CO2

CO2 + H2O = H2CO3

H2CO3 + CaO = CaCO3 + H2O

CaCO3 = CaO + CO2 ( при нагревании )

 

Answer 2

Chemical Reactions:

The given sequence of chemical reactions can be broken down into several steps. Let's analyze each step individually:

1. Fe-Fe2O3-FeCl3-Fe(OH)3-Fe2(SO4)3: - The reaction between iron (Fe) and oxygen (O2) forms iron(III) oxide (Fe2O3). - Iron(III) oxide (Fe2O3) reacts with hydrochloric acid (HCl) to produce iron(III) chloride (FeCl3) and water (H2O). - Iron(III) chloride (FeCl3) reacts with sodium hydroxide (NaOH) to form iron(III) hydroxide (Fe(OH)3) and sodium chloride (NaCl). - Iron(III) hydroxide (Fe(OH)3) reacts with sulfuric acid (H2SO4) to produce iron(III) sulfate (Fe2(SO4)3) and water (H2O).

2. C-CO2-H2CO3-CaCO3-CaO: - Carbon (C) reacts with oxygen (O2) to form carbon dioxide (CO2). - Carbon dioxide (CO2) dissolves in water (H2O) to produce carbonic acid (H2CO3). - Carbonic acid (H2CO3) reacts with calcium carbonate (CaCO3) to form calcium bicarbonate (Ca(HCO3)2). - Calcium bicarbonate (Ca(HCO3)2) decomposes to form calcium carbonate (CaCO3), water (H2O), and carbon dioxide (CO2). - Calcium carbonate (CaCO3) further decomposes to form calcium oxide (CaO) and carbon dioxide (CO2).

Summary:

The given sequence of chemical reactions can be summarized as follows:

Fe + O2 -> Fe2O3 Fe2O3 + HCl -> FeCl3 + H2O FeCl3 + NaOH -> Fe(OH)3 + NaCl Fe(OH)3 + H2SO4 -> Fe2(SO4)3 + H2O C + O2 -> CO2 CO2 + H2O -> H2CO3 H2CO3 + CaCO3 -> Ca(HCO3)2 Ca(HCO3)2 -> CaCO3 + H2O + CO2 CaCO3 -> CaO + CO2

Please note that the above reactions are simplified representations and may not account for specific reaction conditions or stoichiometric ratios.