Magnesium Hydroxide and Hydrochloric Acid (Antacid)

Mg(OH)2 + 2HCl → MgCl2 + 2H2O

概要

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.

参加者

役割 物質 係数 状態
反応物 Magnesium Hydroxide Mg(OH)₂ 1 (s)
反応物 Hydrochloric Acid HCl 2 (aq)
生成物 Water H₂O 2 (l)

日常の例

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

産業上の重要性

水酸化マグネシウムは制酸薬として、またプラスチックの難燃剤（ハロゲン化難燃剤の代替）と廃水処理の中和剤として利用される。

特性

タイプ
Double Replacement
可逆的
いいえ
エネルギー
発熱性
ΔH
-108.0 kJ/mol

関連する反応

Iron(III) Chloride and Sodium Hydroxide Ammonia and Hydrochloric Acid (White Smoke) Calcium Carbonate and Hydrochloric Acid Calcium Chloride and Sodium Carbonate Barium Chloride and Sodium Sulfate Precipitation Calcium Hydroxide and Carbon Dioxide (Limewater Test) Sodium Hydroxide and Iron(III) Chloride (Rust Color) Sodium Hydroxide and Hydrochloric Acid Neutralization Potassium Hydroxide and Sulfuric 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.