Question

Why is there a need to have one of the reactant in excess?

(a) To achieve equilibrium faster

(b) Satisfying the stoichiometric requirement

(c) Stable reaction

(d) All of the mentioned

I have been asked this question by my school teacher while I was bunking the class.

Origin of the question is Mixed Acids for Nitration topic in chapter Nitration of Unit Processes

Answer 1

The correct option is (d) All of the mentioned

For explanation I would say: One of the reactant is usually present in excess in order to maintain reasonably fast over-all reaction rates and  to satisfy the stoichiometric requirements of the nitration reaction.