The reaction 2fe + 3cl2 → 2fecl3 is an example of a reaction.

Synthesis reaction

Explanation:

1. Synthesis reaction is a chemical reaction in which two reactants are combining to form one product.

Example:

2. Double displacement reaction is one in which exchange of ions take place.  

Example:

3. Combustion is a type of chemical reaction in which fuel is reacted with oxygen to form carbon dioxide and water.

Example:  

4. Single replacement reaction is a chemical reaction in which more reactive element displaces the less reactive element from its salt solution.

Example:

5. Decomposition is a type of chemical reaction in which one reactant gives two or more than two products.

Example:

a graduated cylinder.

explanation:

it is the most commonly accepted one