Question

7. Скласти рівняння реакцій для здійснення перетворень по a) Mg → MgCl2 → Mg(OH)2 → MgBr2 → Mg → Mg(NO3)2 б) Al → AIN → Al(OH)3 → Al2O3 → KAlO2 → Al(NO3)3

Answer 1

Mg + HCl --> MgCl2 + H2

MgCl2 + 2NaOH --> 2NaCl + Mg(OH)2

Mg(OH)2 + 2HBr --> MgBr + 2 H2O

MgBr2 --> Mg + Br2

4Mg + 10HNO3(конц) --> 4Mg(NO3)2 + N2O + 5H2O

3Al + N2 --> Al3N2

Al3N2 + 6H2O --> 3Al(OH)3 + 2NH3

2Al(OH)3 (t*)--> Al2O3 + 3H2O

Al2O3 + 2KOH (t*)--> 2KAlO2 + H2O

KAlO2 + 4HNO3 --> Al(NO3)3 + KNO3 + 2H2O

Answer 2

Reaction Equations for the Given Transformations

a) The reaction equations for the given transformations are as follows:

1. Mg → MgCl2: Magnesium reacts with chlorine to form magnesium chloride. - Equation: 2Mg + Cl2 → 2MgCl2 [[1]]

2. MgCl2 → Mg(OH)2: Magnesium chloride reacts with sodium hydroxide to form magnesium hydroxide. - Equation: MgCl2 + 2NaOH → Mg(OH)2 + 2NaCl [[2]]

3. Mg(OH)2 → MgBr2: Magnesium hydroxide reacts with hydrobromic acid to form magnesium bromide. - Equation: Mg(OH)2 + 2HBr → MgBr2 + 2H2O [[3]]

4. MgBr2 → Mg: Magnesium bromide reacts with hydrogen gas to form magnesium metal. - Equation: MgBr2 + H2 → Mg + 2HBr [[4]]

5. Mg → Mg(NO3)2: Magnesium reacts with nitric acid to form magnesium nitrate. - Equation: Mg + 2HNO3 → Mg(NO3)2 + H2 [[5]]

b) The reaction equations for the given transformations are as follows:

1. Al → AlN: Aluminum reacts with nitrogen gas to form aluminum nitride. - Equation: 2Al + N2 → 2AlN [[6]]

2. AlN → Al(OH)3: Aluminum nitride reacts with water to form aluminum hydroxide. - Equation: AlN + 3H2O → Al(OH)3 + NH3 [[7]]

3. Al(OH)3 → Al2O3: Aluminum hydroxide undergoes dehydration to form aluminum oxide. - Equation: 2Al(OH)3 → Al2O3 + 3H2O [[8]]

4. Al2O3 → KAlO2: Aluminum oxide reacts with potassium hydroxide to form potassium aluminate. - Equation: Al2O3 + 2KOH → 2KAlO2 + H2O [[9]]

5. KAlO2 → Al(NO3)3: Potassium aluminate reacts with nitric acid to form aluminum nitrate. - Equation: KAlO2 + 3HNO3 → Al(NO3)3 + KOH [[10]]

Please note that these equations represent the overall reactions and may not include specific reaction conditions or stoichiometric coefficients.