Question

The molecularity of a complex reaction given below is 2N2O5(g) =4NO2(g)+O2(g)

Answer 1

Answer:

D

Explanation:

The given reaction is said to be a complex reaction. Now any complex reaction (unlike elementary reactions) is essentially a reaction which is not to be taken at face value, by just initially seeing the given reaction, since it may have reaction intermediates, and the slowest rate determining step isn't the initially given reaction as well.

Now, Molecularity is defined as the summation of the stoichiometric coefficients of the reactant side if it is an elementary reaction (reaction with no intermediates).

Thus, the molecularity for given reaction has no sense since it isn't defined for a complex reaction. This makes option D the correct answer.