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  4. Assertion The order of a reaction can have fractional value. Reason The order of a reaction cannot be written from balanced equation of a reaction.

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Q. $Assertion$ The order of a reaction can have fractional value.
$Reason$ The order of a reaction cannot be written from balanced equation of a reaction.

Chemical Kinetics

Solution:

It is an experimentally determined value and depends upon the concentration change of reactant. It changes with pressure, temperature and concentration and it can have the fractional value.