Contents
Balanced Chemical Equation – Solution
2Mg + O2 → 2MgO
The coefficients show the number of particles (atoms or molecules), and the indices show the number of atoms that make up the molecule. New substances are formed as a result of the rearrangement of the original atoms. As a result of a chemical reaction, atoms of chemical elements do not disappear anywhere and new ones do not appear, their number remains unchanged – this follows from the law of conservation of mass of substances.
Chemical Reaction Information
Magnesium + Dioxygen = Magnesium Oxide
This is an oxidation-reduction (redox) reaction. Mg is a reducing agent, O2 is an oxidizing agent.
- 2 Mg0 – 4 e– → 2 MgII (oxidation)
- 2 O0 + 4 e– → 2 O-II (reduction)
Reaction Type
Synthesis
Substances that react are called starting materials or reactants. The substances that form as a result are called reaction products.
Reactants:
Mg
- Names: Magnesium.
- Appearance: Grey powder.
O2
- Names: Dioxygen, Oxygen.
- Appearance: Odourless compressed gas.
Products:
MgO – Magnesium oxide
- Other names: Magnesia.
- Appearance: White powder; Hygroscopic fine white powde.
Similar Examples of Equalizing a Chemical Reaction
| O2 + Mg → MgO + e |
| O2 + H2 + Mg → Mg(OH)2 |
| O2 + Mg → Mg2O2 |
| O2 + Mg + N2 → MgO + Mg3N2 |
| O2 + Mg → MgO4 |
| O2 + Mg → Mg2O7 |
| O2 + CO2 + Mg → MgCO3 |
| H2O + O2 + Mg → Mg(OH)2 |
| O2 + Mg → OMg |
| O2 + Mg + (NH4)2Cr2O7 → H2O + N2 + MgO + Cr2O3 |
| O2 + Mg → Mg2O |
| O2 + Mg → MgO |
| O2 + Mg → MgO2 |
| O2 + Mg → MgO3 |
