Question

Генетическая цепочка алюминия с уравнениями реакции

Answer 1

Al=Al2O3=AlCl3=Al(OH)3=Al2O3=Al2(SO4)3
2Al+B2O3=Al2O3+2B
Al2O3+6HCl=2AlCl3+3H2O
AlCl3+3H2O=Al(OH)3+3HCl
Al(OH)3=Al2O3+3H2O
Al2O3+3K2S2O7=Al(SO4)3+2K2SO4

Answer 2

Genetic Chain of Aluminum with Reaction Equations

Aluminum is a chemical element with the symbol Al and atomic number 13. It is a silvery-white, soft, nonmagnetic, and ductile metal in the boron group. The genetic chain of aluminum involves various reactions and processes.

Genetic Chain of Aluminum: The genetic chain of aluminum involves its extraction from bauxite ore, refining, and subsequent use in various applications. The extraction of aluminum from bauxite ore involves the Bayer process, which includes the following reactions: 1. Dissolution of Aluminum Oxide: - The first step in the Bayer process involves the dissolution of aluminum oxide (Al2O3) from bauxite ore using sodium hydroxide (NaOH) at high temperature and pressure. - The chemical equation for this reaction is: ``` Al2O3 + 2NaOH + 3H2O → 2Na[Al(OH)4] ``` - This reaction results in the formation of sodium aluminate, which is soluble in the sodium hydroxide solution.

2. Precipitation of Aluminum Hydroxide: - The next step involves the precipitation of aluminum hydroxide from the sodium aluminate solution by carbonation. - The chemical equation for this reaction is: ``` 2Na[Al(OH)4] + CO2 + 3H2O → 2Al(OH)3↓ + 2NaHCO3 ``` - This reaction leads to the formation of aluminum hydroxide, which is then calcined to produce alumina (Al2O3).

3. Electrolytic Reduction of Alumina: - The Hall-Héroult process is commonly used for the electrolytic reduction of alumina to produce aluminum metal. - The overall reaction for the electrolytic reduction of alumina is: ``` 2Al2O3 → 4Al + 3O2 ``` - This process involves the use of molten cryolite (Na3AlF6) as a solvent for alumina at high temperatures.

Conclusion: The genetic chain of aluminum involves a series of chemical reactions and processes, including the extraction of aluminum oxide from bauxite ore, precipitation of aluminum hydroxide, and the electrolytic reduction of alumina to produce aluminum metal.