Aluminum Hydroxide and Hydrochloric Acid
Al(OH)3 + 3HCl → AlCl3 + 3H2O
Overview
Aluminum hydroxide, an amphoteric hydroxide, dissolves in hydrochloric acid to form aluminum chloride and water. This demonstrates the basic character of aluminum hydroxide. The same compound also dissolves in sodium hydroxide, showing its amphoteric nature.
Participants
| Role | Substance | Coefficient | State |
|---|---|---|---|
| Reactant | Aluminum Hydroxide Al(OH)₃ | 1 | (s) |
| Reactant | Hydrochloric Acid HCl | 3 | (aq) |
| Product | Water H₂O | 3 | (l) |
Everyday Example
Aluminum hydroxide is used in antacid formulations (like Maalox) where it neutralizes stomach acid via this reaction.
Industrial Importance
Aluminum hydroxide is a major industrial chemical used in water purification, antacids, fire retardants, and as a precursor to aluminum oxide.
Properties
- Type
- Double Replacement
- Reversible
- No
- Energy
- Exothermic
- ΔH
- -170.0 kJ/mol
Related Reactions
Ammonia and Hydrochloric Acid (White Smoke)
Barium Chloride and Sodium Sulfate Precipitation
Calcium Carbonate and Hydrochloric Acid
Calcium Chloride and Sodium Carbonate
Calcium Hydroxide and Carbon Dioxide (Limewater Test)
Calcium Hydroxide and Sulfuric Acid
Copper(II) Sulfate and Sodium Hydroxide
Iron(III) Chloride and Sodium Hydroxide
Lead Nitrate and Potassium Iodide (Golden Rain)
Magnesium Hydroxide and Hydrochloric Acid (Antacid)
Frequently Asked Questions
What is the equation for Aluminum Hydroxide and Hydrochloric Acid?
The balanced equation is: Al(OH)₃ + 3HCl → AlCl₃ + 3H₂O.
What type of reaction is Aluminum Hydroxide and Hydrochloric Acid?
Aluminum Hydroxide and Hydrochloric Acid is a double replacement reaction.
Is Aluminum Hydroxide and Hydrochloric Acid exothermic or endothermic?
Aluminum Hydroxide and Hydrochloric Acid is exothermic (releases energy). The enthalpy change (ΔH) is -170.0 kJ/mol.