What is the molecularity of the followin

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Target Exam

CUET

Subject

Chemistry

Chapter

Physical: Chemical Kinetics

Question:

What is the molecularity of the following elementary chemical reaction?

PCl₅ → PCl₃ + Cl₂

Options:

Bimolecular

Unimolecular

Trimolecular

None of these

Correct Answer:

Unimolecular

Explanation:

PCl₅ → PCl₃ + Cl₂

This is a unimolecular decomposition reaction where phosphorous pentachloride decomposed into phosphorous trichloride and chlorine molecule.