Magnesium Hydroxide and Hydrochloric Acid (Antacid)

Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O

Aperçu

Magnesium hydroxide (milk of magnesia) neutralizes hydrochloric acid to form magnesium chloride and water. This is exactly the reaction that occurs in the stomach when antacid tablets are taken. Magnesium hydroxide is a mild base that neutralizes acid without causing rebound acidity.

Participants

Rôle	Substance	Coefficient	État
Réactif	Magnesium Hydroxide Mg(OH)₂	1	(s)
Réactif	Hydrochloric Acid HCl	2	(aq)
Produit	Water H₂O	2	(l)

Exemple du quotidien

Milk of magnesia antacid works by this reaction, neutralizing excess stomach acid (HCl) to relieve heartburn and indigestion.

Importance industrielle

Magnesium hydroxide is used in antacid formulations, as a fire retardant in plastics, and in wastewater treatment for heavy metal removal.

Propriétés

Type: Double Replacement
Réversible: Non
Énergie: Exothermique
ΔH: -108,0 kJ/mol

Réactions associées

Iron(III) Chloride and Sodium Hydroxide Calcium Chloride and Sodium Carbonate Barium Chloride and Sodium Sulfate Precipitation Calcium Hydroxide and Carbon Dioxide (Limewater Test) Lead Nitrate and Potassium Iodide (Golden Rain) Copper(II) Sulfate and Sodium Hydroxide Sodium Hydroxide and Iron(III) Chloride (Rust Color) Sodium Hydroxide and Hydrochloric Acid Neutralization Sodium Carbonate and Hydrochloric Acid Aluminum Hydroxide and Hydrochloric Acid

Frequently Asked Questions

What is the equation for Magnesium Hydroxide and Hydrochloric Acid (Antacid)?

The balanced equation is: Mg(OH)₂ + 2HCl → MgCl₂ + 2H₂O.

What type of reaction is Magnesium Hydroxide and Hydrochloric Acid (Antacid)?

Magnesium Hydroxide and Hydrochloric Acid (Antacid) is a double replacement reaction.

Is Magnesium Hydroxide and Hydrochloric Acid (Antacid) exothermic or endothermic?

Magnesium Hydroxide and Hydrochloric Acid (Antacid) is exothermic (releases energy). The enthalpy change (ΔH) is -108.0 kJ/mol.