Question

Identify the single displacement reaction. 2H 2 O 2 ⟶ 2H 2O Al 2S 3 ⟶ 2Al 3S Cl 2 2KBr ⟶ 2KCl Br 2 C 4H 12 7O 2 ⟶ 6H 2O 4CO 2.

Answer 1

Reaction three is the single replacement reaction.

A single displacement or replacement reactions are the exchange of a single element with another compound or element.

Which is the single-displacement reaction?

The first reaction is a combination reaction as the water and oxygen combines togetherly to produce hydrogen peroxide and hence is incorrect.

The second reaction is a decomposition reaction in which the reactant $\rm Al_{2}S_{3}$ breaks into two products $\rm 2Al$ and  $3\rm S$.

The third reaction is the single replacement reaction as more reactive $\rm Cl_{2}$ displaces $\rm Br$ from the potassium to produce $\rm 2KCl$ and $\rm Br_{2}$.

The fourth reaction is a combustion reaction as hydrocarbon reacts with the oxygen molecule to produce water and carbon dioxide.

Therefore, $\rm Al_{2}S_{3} \rightarrow2Al + 3S$ is the single-displacement reaction.

Learn more about the single-displacement reaction here:

https://brainly.com/question/8045212