Question

STATEMENT-1 Molecularity has no meaning for a complex reaction.
STATEMENT-2 Molecularity is defined only for Rate determining Step.
Examine the statements carefully and mark the correct answer according to the instructions given below:

• A. If both statements are TRUE and statement -2 is the correct explanation of statement-1
• B. If both the statements are TRUE but statement-2 is NOT the correct explanation of statement-1
• C. If statement-1 is TRUE and statement-2 is FALSE
• D. If statement-1 is FALSE and statement-2 is TRUE

Answer 1

The correct option is C

If statement-1 is TRUE and statement-2 is FALSE

Molecularity of a reaction can be defined only for an elementary reaction because complex reaction does not take place in one single step and it is almost impossible for all the total molecules of the reactants to be in a state of encounter simultaneously. Molecularity is also defined for each step of the reaction in a complex scheme of reactions.