Displacement of Hydrogen from Acid by Magnesium
Mg + 2HCl → MgCl2 + H2
نظرة عامة
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.
المشاركون
| الدور | المادة | المعامل | الحالة |
|---|---|---|---|
| متفاعل | Magnesium Mg | 1 | (s) |
| متفاعل | Hydrochloric Acid HCl | 2 | (aq) |
| منتج | Hydrogen H | 1 | (g) |
مثال من الحياة اليومية
This reaction is commonly used in school chemistry labs to study reaction kinetics by measuring the rate of hydrogen gas evolution.
الأهمية الصناعية
Understanding metal-acid redox reactions is fundamental to corrosion science, electrochemistry, and metallurgical processing.
الخصائص
- النوع
- Redox
- قابل للعكس
- لا
- الطاقة
- طارد للحرارة
- ΔH
- -462,0 kJ/mol
التفاعلات ذات الصلة
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.