Displacement of Hydrogen from Acid by Magnesium

Mg + 2HCl → MgCl2 + H2

概要

Magnesium is oxidized from Mg⁰ to Mg²⁺ while hydrogen ions are reduced from H⁺ to H₂. This vigorous redox reaction produces rapid hydrogen evolution and significant heat. The reaction rate can be studied by varying acid concentration, temperature, or magnesium surface area.

参加者

役割 物質 係数 状態
反応物 Magnesium Mg 1 (s)
反応物 Hydrochloric Acid HCl 2 (aq)
生成物 Hydrogen H 1 (g)

日常の例

This reaction is commonly used in school chemistry labs to study reaction kinetics by measuring the rate of hydrogen gas evolution.

産業上の重要性

金属-酸酸化還元反応の理解は腐食科学、電気化学、冶金学の基礎であり、構造用金属の腐食防食技術の開発に直結する。

特性

タイプ
Redox
可逆的
いいえ
エネルギー
発熱性
ΔH
-462.0 kJ/mol

関連する反応

Bleaching with Sodium Hypochlorite Copper Reduction of Silver Ion Aqua Regia Dissolving Gold Cerium(IV) Reduction by Iron(II) Chlorine Oxidation of Bromide Copper Oxidation by Nitric Acid Hypochlorite Oxidation of Hydrogen Peroxide Hydrogen Peroxide as Oxidizing Agent (Acidic) Zinc Reduction of Silver Ion Iron(II) to Iron(III) Oxidation by Oxygen

Frequently Asked Questions

What is the equation for Displacement of Hydrogen from Acid by Magnesium?
The balanced equation is: Mg + 2HCl → MgCl₂ + H₂.
What type of reaction is Displacement of Hydrogen from Acid by Magnesium?
Displacement of Hydrogen from Acid by Magnesium is a redox reaction.
Is Displacement of Hydrogen from Acid by Magnesium exothermic or endothermic?
Displacement of Hydrogen from Acid by Magnesium is exothermic (releases energy). The enthalpy change (ΔH) is -462.0 kJ/mol.