Question

What type of reaction is represented by each of the following equation?

$2\mathrm{Mg}+{\mathrm{O}}_2\to 2\mathrm{MgO}$

Answer 1

Combination Reaction

Two or more reactants tend to combine togther and give rise to a sinlge compound as a main product. Such reactions are called combination reaction.

In the given reaction, Magnesium reacts with Oxygen to form Magnesium oxide (MgO). This is classified as a combination reaction. This is because, in these types of reactions, two reactants (Magnesium and Oxygen) combine to form a single product (Magnesium oxide).

Example of combination reaction

$$\begin{gathered} 2\mathrm{Ca}\left(\mathrm{s}\right)+{\mathrm{O}}_2\left(\mathrm{g}\right)\to 2\mathrm{CaO}\left(\mathrm{s}\right) \\ \mathrm{Calcium}\mathrm{Oxygen}\mathrm{Calcium}\mathrm{oxide} \end{gathered}$$

In this reaction, Calcium combines with Oxygen in order to form Calcium oxide. Thus, the type of reaction is a combination reaction.