For which type of reactions, order and molecularity have the same… - Vidyadip

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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