Question:
Anhydrous AlCl$_3$ fume in air due to:
Anhydrous AlCl$_3$ fume in air due to:
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Anhydrous AlCl$_3$ fumes in air due to hydrolysis, reacting with moisture to form aluminum hydroxide and HCl.
Updated On: Apr 22, 2026
- oxidation
- hydrolysis
- reduction
- hydrogenation
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The Correct Option is B
Solution and Explanation
Step 1: Understand the behavior of anhydrous AlCl$_3$.
Anhydrous aluminum chloride (AlCl$_3$) is highly reactive and fume in moist air. It undergoes hydrolysis, where it reacts with water vapor in the air to form aluminum hydroxide and hydrochloric acid.
Step 2: Analyze the reactions.
- Oxidation: This involves the loss of electrons, which is not the case for anhydrous AlCl$_3$ in air.
- Hydrolysis: This is the correct reaction, where AlCl$_3$ reacts with water vapor to form Al(OH)$_3$ and HCl.
- Reduction: This involves the gain of electrons, but it is not the reaction for AlCl$_3$.
- Hydrogenation: This is the addition of hydrogen, which does not apply to AlCl$_3$.
Step 3: Conclusion.
The correct answer is (2), hydrolysis.
Anhydrous aluminum chloride (AlCl$_3$) is highly reactive and fume in moist air. It undergoes hydrolysis, where it reacts with water vapor in the air to form aluminum hydroxide and hydrochloric acid.
Step 2: Analyze the reactions.
- Oxidation: This involves the loss of electrons, which is not the case for anhydrous AlCl$_3$ in air.
- Hydrolysis: This is the correct reaction, where AlCl$_3$ reacts with water vapor to form Al(OH)$_3$ and HCl.
- Reduction: This involves the gain of electrons, but it is not the reaction for AlCl$_3$.
- Hydrogenation: This is the addition of hydrogen, which does not apply to AlCl$_3$.
Step 3: Conclusion.
The correct answer is (2), hydrolysis.
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