What is the equation for the formation of MgO?
The formation of magnesium oxide (MgO) occurs when magnesium (Mg) reacts with oxygen (O₂) in the air. This is a combustion reaction where magnesium burns with a bright white flame, forming magnesium oxide as a product.
Balanced Chemical Equation:
2Mg+O2→2MgO2Mg + O_2 \rightarrow 2MgO
Explanation of the Reaction:
- Magnesium (Mg) is a metal that readily reacts with oxygen in the air.
- Oxygen (O₂) is a diatomic molecule, meaning it exists as two oxygen atoms bonded together.
- When heated, magnesium reacts with oxygen, forming magnesium oxide (MgO), a white solid.
Type of Reaction:
- Combination reaction (two reactants form one product)
- Oxidation reaction (magnesium gains oxygen)
- Exothermic reaction (releases heat and light)
This reaction is commonly seen in chemistry labs when burning magnesium ribbon, producing a bright flame and a white powder (MgO).
Question:
What is the equation for the formation of MgO?
Solution:
Magnesium oxide (MgO) is formed when magnesium reacts with oxygen.
Step 1:
Magnesium loses 2 electrons and forms Mg²⁺ ion.
Mg → Mg²⁺ + 2e⁻
Step 2:
Oxygen gains 2 electrons and forms O²⁻ ion.
O + 2e⁻ → O²⁻
Step 3:
Mg²⁺ and O²⁻ combine to form magnesium oxide.
Mg²⁺ + O²⁻ → MgO
Balanced Chemical Equation:
2Mg + O₂ → 2MgO
Nature of Bond:
MgO contains an ionic bond because electrons are transferred
from magnesium to oxygen.
Final Answer:
Balanced equation for formation of MgO:
2Mg + O₂ → 2MgO
