Which type of reaction is exemplified by the chemical equation KClO₃ → KCl + O₂?

Rationale

Decomposition reactions involve the breakdown of a compound into simpler substances.

In the given equation KClO₃ → KCl + O₂, potassium chlorate (KClO₃) decomposes into potassium chloride (KCl) and oxygen gas (O₂), exemplifying a decomposition reaction where a single compound breaks down into two or more products.

A (Single replacement) YOUR ANSWER

Single replacement reactions involve an element that displaces another element in a compound, forming a new compound and releasing the displaced element. The given equation does not depict such a scenario, as there is no element replacing another; instead, it shows the breakdown of a single compound.

B (Double replacement) YOUR ANSWER

Double replacement reactions occur when two compounds exchange components to form two new compounds. This is not applicable here, as the reaction involves only one reactant (KClO₃) breaking down into products, rather than two compounds interacting with each other.

C (Combustion) YOUR ANSWER

Combustion reactions typically involve a substance reacting with oxygen to produce energy, along with carbon dioxide and water or other products. The provided equation does not fit this definition, as there is no combustion of KClO₃ occurring; it is merely decomposing into other substances.

D (Decomposition) CORRECT

In this reaction, potassium chlorate decomposes into potassium chloride and oxygen gas. This transformation clearly illustrates the essential characteristic of decomposition reactions, where a single compound breaks down into simpler products without any further interactions or exchanges.

Conclusion

The reaction KClO₃ → KCl + O₂ is a clear example of a decomposition reaction, where a single compound is broken down into two simpler products, potassium chloride and oxygen. Other choices such as single replacement, double replacement, and combustion do not accurately describe the breakdown process occurring in this equation, reinforcing the importance of recognizing decomposition as a unique type of chemical reaction.

Which type of reaction is exemplified by the chemical equation KClO₃ → KCl + O₂?

Decomposition reactions involve the breakdown of a compound into simpler substances.

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