Question

Identify the type of reaction represented by each equation.
A: H2 + Cl2 → 2HCl
B: CH4 + 2O2 → CO2 + 2H2O

Answer 1

Explanation:

When two elements combine together and result in the formation of a single product then it is known as a synthesis reaction.

For example,   $H_{2} + Cl_{2} \rightarrow 2HCl$

Therefore, the given reaction $H_{2} + Cl_{2} \rightarrow 2HCl$ is a synthesis reaction.

Combustion is defined as the reaction in which a hydrocarbon reacts with oxygen and leads to the formation of carbon dioxide and water.

For example, $CH_{4} + 2O_{2} \rightarrow CO_{2} + H_{2}O$

Hence, the given reaction $CH_{4} + 2O_{2} \rightarrow CO_{2} + H_{2}O$ is a combustion reaction.