A combination reaction is a reaction where two reactants are combined into one product. A combination reaction is also known as a synthesis reaction. The reaction has the following general form:
X + Y → XY
Combination Reaction Examples
Recognize a combination reaction by examining the number of reactants and products. In this reaction, two reactants become a single product. Combination reaction may occur between two elements, two compounds, or between a compound and an element.
The burning of carbon in the presence of oxygen to produce carbon dioxide is a combination reaction:
C + O2 → CO2
Magnesium oxide combines with carbon dioxide to form magnesium carbonate in a combination reaction:
MgO + CO2 → MgCO3