Displacement of Hydrogen from Acid by Magnesium
Mg + 2HCl → MgCl2 + H2
Обзор
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.
Участники
| Роль | Вещество | Коэффициент | Состояние |
|---|---|---|---|
| Реагент | Magnesium Mg | 1 | (s) |
| Реагент | Hydrochloric Acid HCl | 2 | (aq) |
| Продукт | Hydrogen H | 1 | (g) |
Пример из жизни
This reaction is commonly used in school chemistry labs to study reaction kinetics by measuring the rate of hydrogen gas evolution.
Промышленное значение
Understanding metal-acid redox reactions is fundamental to corrosion science, electrochemistry, and metallurgical processing.
Свойства
- Тип
- Redox
- Обратимая
- Нет
- Энергия
- Экзотермическая
- ΔH
- -462,0 kJ/mol
Связанные реакции
Bleaching with Sodium Hypochlorite
Copper Reduction of Silver Ion
Aqua Regia Dissolving Gold
Cerium(IV) Reduction by Iron(II)
Copper Oxidation by Nitric Acid
Hypochlorite Oxidation of Hydrogen Peroxide
Hydrogen Peroxide as Oxidizing Agent (Acidic)
Hydrogen Peroxide Disproportionation
Iodine and Sodium Thiosulfate Titration
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.