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The number of molecules that react with ...

The number of molecules that react with each in an elementary step gives a measure of the

A

order of the reaction

B

molecularity of the reaction

C

stoichiometry of the reaction

D

activation energy of the reaction

Text Solution

Verified by Experts

The correct Answer is:
B
Elementary reactions are classfied according to their molecularity. The number of reacting species (atoms, molecules or ions) taking part in an elementary reaction, which must colllide simultaneously in order to bring about a chemical reaction is called molecularity of a reaction.
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Knowledge Check

  • The number of molecules of the reactants taking part in a single step of the reaction tells about. :

    A
    molecularity of the reaction
    B
    mechanism of the reaction
    C
    order of reaction
    D
    all of the above

  • Assertion (A): Elementary reactions have same value of order and molecularity. Reason (R): Molecularity is the number of molecules that participate in the reaction, while order is an experimental quantity.

    A
    Both A and R are true and R is the correct explanation for A
    B
    Both A and R are true but R is NOT the correct explanation of A
    C
    A is true but R is false
    D
    A is false and R is true

  • Maximum number of molecules of CH_(3)I that can react with a molecule of CH_(3)NH_(2) are

    A
    3
    B
    4
    C
    2
    D
    1

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    Minimum energy required for molecules to react is called :

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