Question

Al-Al2O3--AlCl3-Al(OH)3

Answer 1

2AL+3O2=2Al2O3
Al2O3 + 6HCl = 2AlCl3 + 3H2O
AlCl3 + 3NaOH = Al(OH)3 + 3NaCl

Answer 2

The series of compounds you mentioned, Al-Al2O3--AlCl3-Al(OH)3, represents a sequence of chemical reactions involving aluminum (Al) and its interactions with oxygen (O), chlorine (Cl), and hydroxide ions (OH-). Let's break it down step by step:

1. Al-Al2O3: This indicates the formation of aluminum oxide (Al2O3), commonly known as alumina. Alumina is a compound formed when aluminum reacts with oxygen. It is a white, powdery substance commonly used as a catalyst, in the production of ceramics, and as an abrasive.

2. Al2O3-AlCl3: This reaction involves the reaction of aluminum oxide (Al2O3) with chlorine gas (Cl2) to form aluminum chloride (AlCl3). Aluminum chloride is a compound that exists as a white solid and is commonly used as a catalyst in organic synthesis and as an additive in antiperspirants.

3. AlCl3-Al(OH)3: In this step, aluminum chloride (AlCl3) reacts with water (H2O) to form aluminum hydroxide (Al(OH)3). Aluminum hydroxide is a white, gelatinous substance that is often used as an antacid to neutralize excess stomach acid. It is also an ingredient in some medications and serves as a precursor for the production of aluminum oxide.

Overall, the reaction series can be summarized as follows: Al + O2 -> Al2O3 Al2O3 + 3Cl2 -> 2AlCl3 AlCl3 + 3H2O -> Al(OH)3 + 3HCl