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Chemical Kinetics — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryChemical Kinetics3 Marks
Question
For which type of reactions, order and molecularity have the same value?
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Answer

Elementary reactions have same value of order and molecularity.

Elementary reaction is chemical reaction in which one or more reactants racts directly to form product in a single step with single transition state.

Example:

$\text{A + B}\xrightarrow{\ \ \ \ \ }\text{Products}$

Rate equation: [A]1[B]1

Order of reaction is sum of the cofficients of rate equation,

$\therefore$ Order of reaction = 2

Molecularity = 2

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