MDCAT Chemistry MCQ #5096

In an elementary reaction step involving the collision of two molecules, the term 'molecularity' refers specifically to which parameter?

MDCAT Chemistry MCQ #5096

  1. Question 1

    Q1. In an elementary reaction step involving the collision of two molecules, the term 'molecularity' refers specifically to which parameter?

    • A) The total number of molecules in the balanced equation
    • B) The sum of exponents in the rate law
    • C) The number of reacting species in an elementary step
    • D) The experimentally determined power of concentration

    Answer: The number of reacting species in an elementary step

    Explanation: Molecularity is the number of reactant molecules in an elementary step. Option D refers to the experimental order, which may differ.