Statement - I - The molecularity of the reaction H2 - Br2- 2HBr is 2-Statement - II- The order of this reaction is 3-2-

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Balancing Chemical Equations by Partial Equation Method

Statement - I...

Question

Statement - I : The molecularity of the reaction $H_{2} + B r_{2} \to$ 2HBr is 2.
Statement - II: The order of this reaction is 3/2.

Both statements are true Statement - II is correct explanation of Statement - I

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Both statements are true but Statement -II is not correct explanation of Statement - I

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Statement - I is true but Statement - II is false.

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Statement - I is false but Statement - II is true.

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Solution

The correct option is B Both statements are true but Statement -II is not correct explanation of Statement - I
Generally molecularity of simple reactions is equal tot he sum of the number of molecules of reactants involved in the balanced stoichiometric equation or it can also be defined as the minimum number of reacting particles (molecules, atoms or ions) that come together or collide in a rate determining step to form product or products. In case of $H_{2} + B r_{2} \to 2 H B r$ , molecularity is two. Order does not depend upon molecularity or vice-versa, it is an experimentally determined quantity.

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Statement - I : The molecularity of the reaction H2+Br2→ 2HBr is 2.Statement - II: The order of this reaction is 3/2.

Statement - I : The molecularity of the reaction $H_{2} + B r_{2} \to$ 2HBr is 2.
Statement - II: The order of this reaction is 3/2.