Fill in the blanks:
$1.$ The rate of reaction depends on the ........... step.
$2.$ In a bimolecular reaction,the reaction takes place with ........... species and ........... .
$3.$ The order of reaction is determined by ...........

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(N/A) $1.$ The rate of reaction depends on the $\text{slowest}$ step (also known as the rate-determining step).
$2.$ In a bimolecular reaction,the reaction takes place with $\text{two}$ species and $\text{molecularity} = 2$.
$3.$ The order of reaction is determined by the $\text{sum of the powers of the concentration terms}$ in the rate law expression.

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