Differentiate between order of reaction and molecularity of reaction.

Differentiate between order of reaction and molecularity of reaction.
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1 Answer

Answer :

Order of reaction 
Molecularity
1. It is defined as sum of powers to which concentration terms are raised in rate law
1. It is the number of molecules taking part in chemical reaction.
2. It is determined experimentally
2. It is determined theoretically
3. It can be zero or even in fraction 
3. It is always in whole number except Zero.
4. Order of complex reaction can be determined,
4. Molecularity of complex reaction can not be determined.

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