Displacement of Hydrogen from Acid by Magnesium

Mg + 2HCl → MgCl2 + H2

Ikhtisar

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.

Peserta

Peran Zat Koefisien Keadaan
Reaktan Magnesium Mg 1 (s)
Reaktan Hydrochloric Acid HCl 2 (aq)
Produk Hydrogen H 1 (g)

Contoh Sehari-hari

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

Pentingnya dalam Industri

Understanding metal-acid redox reactions is fundamental to corrosion science, electrochemistry, and metallurgical processing.

Sifat

Jenis
Redox
Dapat Dibalik
Tidak
Energi
Eksoterm
ΔH
-462,0 kJ/mol

Reaksi Terkait

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.