Question

Часть С. С1. Напишите уравнения реакций, с помощью которых можно осуществить следующие превращения: Fe FeCl2 Fe(OH)2 FeO Fe FeCl3. Переход 4 рассмотрите в свете ОВР; переходы 2 и 5 - с позиции электролитической диссоциации. С1. Напишите уравнения реакций, с помощью которых можно осуществить следующие превращения: Na NaOH Na2CO3 NaHCO3 NaCl Na2SO4. Переход 1 рассмотрите в свете ОВР; переходы 4 и 5 - с позиции электролитической диссоциации. С1. Напишите уравнения реакций, с помощью которых можно осуществить следующие превращения: Al2O3 AlCl3 Al(OH)3 Al2O3 Al Al2(SO4)3. Переход 5 рассмотрите в свете ОВР; переходы 1и 2 - с позиции электролитической диссоциации.

Answer 1

Fe + 2HCl -> FeCl2 + H2
FeCl2 + 2NaOH -> Fe(OH)2 + 2NaCl
Fe(OH)2 -(нагревание) =FeO+H2O
FeO+H2SO4=FeSO4+H2OeSO4 + Zn = Fe + ZnSO

Answer 2

Prerequisites

Before we can write the equations for the given transformations, let's define the symbols used in the reactions: - Fe: Iron - FeCl2: Iron(II) chloride - Fe(OH)2: Iron(II) hydroxide - FeO: Iron(II) oxide - FeCl3: Iron(III) chloride - Na: Sodium - NaOH: Sodium hydroxide - Na2CO3: Sodium carbonate - NaHCO3: Sodium bicarbonate - NaCl: Sodium chloride - Na2SO4: Sodium sulfate - Al2O3: Aluminum oxide - AlCl3: Aluminum chloride - Al(OH)3: Aluminum hydroxide - Al2(SO4)3: Aluminum sulfate

Transformation 1: Fe to FeCl2

The transformation from Fe to FeCl2 can be achieved by reacting iron with hydrochloric acid (HCl). The balanced equation for this reaction is: Fe + 2HCl → FeCl2 + H2

Transformation 2: FeCl2 to Fe(OH)2

The transformation from FeCl2 to Fe(OH)2 can be achieved by reacting iron(II) chloride with sodium hydroxide (NaOH). The balanced equation for this reaction is: FeCl2 + 2NaOH → Fe(OH)2 + 2NaCl

Transformation 3: Fe(OH)2 to FeO

The transformation from Fe(OH)2 to FeO can be achieved by heating iron(II) hydroxide. The balanced equation for this reaction is: 2Fe(OH)2 → FeO + H2O

Transformation 4: FeO to Fe

The transformation from FeO to Fe can be achieved by heating iron(II) oxide in the presence of hydrogen gas. The balanced equation for this reaction is: FeO + H2 → Fe + H2O

Transformation 5: Fe to FeCl3

The transformation from Fe to FeCl3 can be achieved by reacting iron with chlorine gas (Cl2). The balanced equation for this reaction is: 2Fe + 3Cl2 → 2FeCl3

Transformation 6: Na to NaOH

The transformation from Na to NaOH can be achieved by reacting sodium with water (H2O). The balanced equation for this reaction is: 2Na + 2H2O → 2NaOH + H2

Transformation 7: NaOH to Na2CO3

The transformation from NaOH to Na2CO3 can be achieved by reacting sodium hydroxide with carbon dioxide (CO2). The balanced equation for this reaction is: 2NaOH + CO2 → Na2CO3 + H2O

Transformation 8: Na2CO3 to NaHCO3

The transformation from Na2CO3 to NaHCO3 can be achieved by reacting sodium carbonate with carbon dioxide. The balanced equation for this reaction is: Na2CO3 + CO2 + H2O → 2NaHCO3

Transformation 9: NaHCO3 to NaCl

The transformation from NaHCO3 to NaCl can be achieved by heating sodium bicarbonate. The balanced equation for this reaction is: 2NaHCO3 → NaCl + H2O + CO2

Transformation 10: NaCl to Na2SO4

The transformation from NaCl to Na2SO4 can be achieved by reacting sodium chloride with sulfuric acid (H2SO4). The balanced equation for this reaction is: 2NaCl + H2SO4 → Na2SO4 + 2HCl

Transformation 11: Al2O3 to AlCl3

The transformation from Al2O3 to AlCl3 can be achieved by reacting aluminum oxide with hydrochloric acid. The balanced equation for this reaction is: Al2O3 + 6HCl → 2AlCl3 + 3H2O

Transformation 12: AlCl3 to Al(OH)3

The transformation from AlCl3 to Al(OH)3 can be achieved by reacting aluminum chloride with water. The balanced equation for this reaction is: AlCl3 + 3H2O → Al(OH)3 + 3HCl

Transformation 13: Al(OH)3 to Al2O3

The transformation from Al(OH)3 to Al2O3 can be achieved by heating aluminum hydroxide. The balanced equation for this reaction is: 2Al(OH)3 → Al2O3 + 3H2O

Transformation 14: Al2O3 to Al

The transformation from Al2O3 to Al can be achieved by the reduction of aluminum oxide using carbon (C) as a reducing agent. The balanced equation for this reaction is: 2Al2O3 + 3C → 4Al + 3CO2

Transformation 15: Al to Al2(SO4)3

The transformation from Al to Al2(SO4)3 can be achieved by reacting aluminum with sulfuric acid. The balanced equation for this reaction is: 2Al + 3H2SO4 → Al2(SO4)3 + 3H2 Please note that the transformations involving electrolytic dissociation are not explicitly mentioned in the search results. However, the given reactions can be balanced and written based on the known chemical reactions and principles.