Question

Identify the type of reaction represented by each equation.

Answer 1

1 - Synthesis

2 - Combustion

Chemical Reaction A is synthesis because both elements have synthesized into one, HCl.

Chemical Reaction B is combustion due to the fact that the products are carbon dioxide and water. A combustion reaction is a reaction that produces these products.

Hope this helps!

Answer 2

Answer: The correct answer is Synthesis and Combustion reaction.

Explanation:

Combustion reaction is defined as the chemical reaction in which a hydrocarbon reacts with oxygen to produce carbon dioxide and water.

$\text{hydrocarbon}+O_2\rightarrow CO_2+H_2O$

Decomposition reaction is defined as the chemical reaction in which a single substance breaks down into two or more simpler substances.

$AB\rightarrow A+B$

Double displacement reaction is defined as the chemical reaction in which exchange of ions takes place.

$AB+CD\rightarrow AD+CB$

Single displacement reaction is defined as the chemical reaction in which more reactive element displaces a less reactive element from its chemical reaction.

$AB+C\rightarrow CB+A$

Synthesis reaction is defined as the chemical reaction in which substances combine in their elemental state to form a single compound.

$A+B\rightarrow AB$

• For A: $H_2+Cl_2\rightarrow 2HCl$

This reaction is considered as a synthesis reaction because hydrogen gas and chlorine gas are combining in their elemental states to produce hydrochloric acid molecule.

• For B: $CH_4+2O_2\rightarrow CO_2+2H_2O$

This reaction is considered as a combustion reaction because methane gas is reacting with oxygen gas to produce carbon dioxide gas and water molecule.

Thus, the correct answer is Synthesis and combustion reaction.