Question

For a zero-order reaction, molecularity can never be equal to zero. Explain.

Answer 1

1. The order of a chemical reaction is experimentally determined. Hence, the order can be zero.
2. Molecularity refers to how many reactant molecules are involved in reactions.
3. The number of molecules in any reaction cannot be zero.
   Hence, for a zero-order reaction molecularity can never be equal to zero.