Magnesium Hydroxide and Hydrochloric Acid (Antacid)

Mg(OH)2 + 2HCl → MgCl2 + 2H2O

概述

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.

参与者

角色 物质 系数 状态
反应物 Magnesium Hydroxide Mg(OH)₂ 1 (s)
反应物 Hydrochloric Acid HCl 2 (aq)
产物 Water H₂O 2 (l)

日常示例

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

工业重要性

氢氧化镁用于抗酸药（中和胃酸）、塑料阻燃剂（环保型）和废水处理（重金属沉淀及pH调节），是多用途工业化学品。

属性

类型
Double Replacement
可逆
否
能量
放热
ΔH
-108.0 kJ/mol

相关反应

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.