Question

1) Fe+HCl+Cl2=... 2) Fe(OH)2+HNO3=NO+... 3) Fe2(SO4)3+NaSCN=...

Answer 1

1. Fe -> Fe2O3 -> Fe(OH)3 -> Fe2(SO4)3 -> Fe(NO3)3

1) 4Fe  + 3O2 = 2Fe2O3

2) на прямую не идет, в два этапа

1) Fe2O3 + 6HCl = 2FeCl3 + 3H2O

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

 

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

4) Fe2(SO4)3 + 3Ba(NO3)2 = 3BaSO4 (осадок) + 2Fe(NO3)3

 

2. Cl2 -> HCl -> CaCl2 -> AgCl

1) Cl2 + H2 = 2HCl

2) 2HCl + CaO = CaCl2 + H2O

3) CaCl2 + 2AgNO3 = Ca(NO3)2 + 2AgCl (осадок)  

1) 4Fe + 3O2 = 2Fe2O3

2)реакции нет

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

4) Fe2(SO4)3 + 3Ba(NO3)2 = 2Fe(NO3)3 + 3BaSO4

 

1) Cl2 + H2 = 2HCl

2) 2HCl + CaCO3 = CaCl2 + H2O + CO2

3) CaCl2 + 2AgNO3 = Ca(NO3)2 + 2AgCl

Answer 2

1. The reaction between Fe (iron), HCl (hydrochloric acid), and Cl2 (chlorine gas) can be represented as follows:

2Fe + 6HCl + Cl2 → 2FeCl3 + 3H2

In this reaction, iron (Fe) reacts with hydrochloric acid (HCl) and chlorine gas (Cl2) to form iron(III) chloride (FeCl3) and hydrogen gas (H2).

2. The reaction between Fe(OH)2 (iron(II) hydroxide) and HNO3 (nitric acid) can be represented as follows:

Fe(OH)2 + 2HNO3 → NO + 2H2O

In this reaction, iron(II) hydroxide reacts with nitric acid to form nitric oxide (NO) and water (H2O).

3. The reaction between Fe2(SO4)3 (iron(III) sulfate) and NaSCN (sodium thiocyanate) can be represented as follows:

Fe2(SO4)3 + 6NaSCN → 3Na2SO4 + 2Fe(SCN)3

In this reaction, iron(III) sulfate reacts with sodium thiocyanate to form sodium sulfate (Na2SO4) and iron(III) thiocyanate (Fe(SCN)3).