Question

what type of reaction is shown below? check all that apply.
2h₂o₂ → 2h₂o + o₂
synthesis
decomposition
combustion
done

Explanation:

1. Synthesis Reaction: A synthesis reaction is when two or more substances combine to form a single new substance (general form: \( A + B

ightarrow AB \)). In the given reaction \( 2H_2O_2
ightarrow 2H_2O + O_2 \), a single reactant is breaking down, not combining, so it is not a synthesis reaction.

1. Decomposition Reaction: A decomposition reaction is when a single compound breaks down into two or more simpler substances (general form: \( AB

ightarrow A + B \)). Here, hydrogen peroxide (\( H_2O_2 \)) is breaking down into water (\( H_2O \)) and oxygen (\( O_2 \)), which fits the decomposition reaction pattern.

1. Combustion Reaction: A combustion reaction typically involves a substance reacting with oxygen to produce carbon dioxide and water (or other oxides), often with heat and light. The given reaction does not involve a substance reacting with oxygen as a reactant (instead, oxygen is a product), so it is not a combustion reaction.

Answer:

B. decomposition