Given this: 1. Aluminum metal reacts with water to produce hydrogen gas and aluminum hydroxide, which is a white, insoluble salt. It may appear grey if the aluminum foil contains black impurities. 2. Aluminum hydroxide reacts with potassium hydroxide to produce soluble potassium ions and aluminate ions Al(OH)4 - 3. Aluminate ions combine with sulfuric acid to produce aluminum hydroxide again, soluble (SO4)2- ions, and water. It should look like a white precipitate at this point. 4. As more sulfuric acid is added, aluminum hydroxide further reacts to produce soluble Al3+ and (SO4)2- ions and water. 5. Alum KAl(SO4)2·12H2O crystallizes out when water is cooled enough to cause the soluble ions (of which alum is made) to coalesce and precipitate out of the solution. Write five balanced equations which correspond to the four intermediate reaction steps and the final crystallization step in the synthesis of Alum from aluminum. Note: Use only those products from one equation that actually react in the next equation.
Given this:
1. Aluminum metal reacts with water to produce hydrogen gas and aluminum hydroxide, which is a white, insoluble salt. It may appear grey if the aluminum foil contains black impurities.
2. Aluminum hydroxide reacts with potassium hydroxide to produce soluble potassium ions and aluminate ions Al(OH)4 -
3. Aluminate ions combine with sulfuric acid to produce aluminum hydroxide again, soluble (SO4)2- ions, and water. It should look like a white precipitate at this point.
4. As more sulfuric acid is added, aluminum hydroxide further reacts to produce soluble Al3+ and (SO4)2- ions and water.
5. Alum KAl(SO4)2·12H2O crystallizes out when water is cooled enough to cause the soluble ions (of which alum is made) to coalesce and precipitate out of the solution.
Write five balanced equations which correspond to the four intermediate reaction steps and the final crystallization step in the synthesis of Alum from aluminum. Note: Use only those products from one equation that actually react in the next equation.
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