Aluminum Hydroxide as Amphoteric Base with HCl

Al(OH)3 + 3HCl → AlCl3 + 3H2O

Descripción general

Aluminum hydroxide dissolves in hydrochloric acid, demonstrating its basic character. As an amphoteric substance, Al(OH)₃ can act as either an acid or a base. With HCl, it donates its hydroxide ions to neutralize the acid. The gelatinous white precipitate dissolves to form a clear solution.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Aluminum Hydroxide Al(OH)₃ 1 (s)
Reactivo Hydrochloric Acid HCl 3 (aq)
Producto Water H₂O 3 (l)

Ejemplo cotidiano

Aluminum hydroxide is the active ingredient in many antacid tablets like Maalox, where it neutralizes stomach acid.

Importancia industrial

El hidróxido de aluminio se utiliza en la purificación del agua como coagulante, como retardante de llama en plásticos y como antiácido farmacéutico.

Propiedades

Tipo
Acid-Base
Reversible
No
Energía
Exotérmico
ΔH
-170,0 kJ/mol

Reacciones relacionadas

Hydrochloric Acid and Barium Hydroxide Acetic Acid and Sodium Acetate Buffer System Acetic Acid Dissociation in Water Ammonia and Hydrochloric Acid Ascorbic Acid and Sodium Hydroxide Barium Hydroxide and Ammonium Thiocyanate (Endothermic) Carbonic Acid and Sodium Hydroxide Aluminum Hydroxide as Amphoteric Acid with NaOH Aluminum Chloride and Chloride Ion (Lewis Acid-Base) Formic Acid and Sodium Hydroxide

Frequently Asked Questions

What is the equation for Aluminum Hydroxide as Amphoteric Base with HCl?
The balanced equation is: Al(OH)₃ + 3HCl → AlCl₃ + 3H₂O.
What type of reaction is Aluminum Hydroxide as Amphoteric Base with HCl?
Aluminum Hydroxide as Amphoteric Base with HCl is a acid-base reaction.
Is Aluminum Hydroxide as Amphoteric Base with HCl exothermic or endothermic?
Aluminum Hydroxide as Amphoteric Base with HCl is exothermic (releases energy). The enthalpy change (ΔH) is -170.0 kJ/mol.