What type of reaction is represented by the equation KCl → K + Cl₂?

Rationale

Decomposition reactions involve a single compound breaking down into two or more products.

In the equation KCl → K + Cl₂, potassium chloride (KCl) is breaking down into potassium (K) and chlorine (Cl₂), which characterizes it as a decomposition reaction. This type of reaction typically involves a single reactant yielding multiple products.

A (Synthesis) YOUR ANSWER

Synthesis reactions occur when two or more simple substances combine to form a more complex compound. In this case, the reaction shows KCl breaking down instead of forming; therefore, it does not represent a synthesis reaction.

B (Decomposition) CORRECT

This is the correct answer as KCl is undergoing decomposition by breaking down into its constituent elements, potassium and chlorine gas. Decomposition reactions can be identified by a single reactant yielding multiple products, which is exactly what happens here.

C (Single replacement) YOUR ANSWER

Single replacement reactions involve one element being displaced by another in a compound. However, KCl is not being replaced by another element; rather, it is breaking down into its individual components. Thus, this choice does not accurately describe the reaction.

D (Double replacement) YOUR ANSWER

Double replacement reactions occur when parts of two compounds exchange places to form two new compounds. Since there is only one compound (KCl) in this reaction and it does not involve an exchange, this option is not applicable to the given equation.

Conclusion

The reaction represented by KCl → K + Cl₂ exemplifies a decomposition reaction, where a single compound breaks down into two or more simpler substances. Understanding the nature of this reaction type is essential for classifying chemical reactions correctly, as it distinguishes the process of breaking down from other reaction types such as synthesis, single replacement, and double replacement.

What type of reaction is represented by the equation KCl → K + Cl₂?

Decomposition reactions involve a single compound breaking down into two or more products.

Related Questions

Related Quizzes

How familiar were you with this question?

Report an Issue

Rate this Practice Test