if you have 10^31 collisions, why do you divide by 6*10^23 avogadros number to get the reaction rate?
Solution:
Since, rate of reaction is expressed in moles litre^-1 sec^-1.
In collision theory, the collision number ( 10^31 collision) is expressed in molecules time^-1 volume^-1.
We divide collision number by Avagadro's number (NA) to convert the rate of reaction in terms of number of molecules time^-1 volume^-1 to number of moles time^-1 volume^-1.
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