Question

if you have 10^31 collisions, why do you divide by 6*10^23 avogadros number to get the reaction rate?

Answer 1

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.