Displacement of Hydrogen from Acid by Magnesium

Mg + 2HCl → MgCl2 + H2

Descripción general

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.

Participantes

Rol Sustancia Coeficiente Estado
Reactivo Magnesium Mg 1 (s)
Reactivo Hydrochloric Acid HCl 2 (aq)
Producto Hydrogen H 1 (g)

Ejemplo cotidiano

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

Importancia industrial

Comprender las reacciones redox entre metales y ácidos es fundamental para la ciencia de la corrosión, la electroquímica y los procesos metalúrgicos industriales.

Propiedades

Tipo
Redox
Reversible
No
Energía
Exotérmico
ΔH
-462,0 kJ/mol

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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.