Question

Reactant which controls amount of products is _________

(a) Deficient reactant

(b) Non- Deficient reactant

(c) Limiting reactant

(d) Excess reactant

I had been asked this question in an interview.

Question is from Effect of Maintenance on Yields in section Homogenous Reactions of Bioprocess Engineering

Answer 1

Right option is (c) Limiting reactant

The explanation is: The same thing happens in chemical reactions: there is always a limiting reactant, which is a chemical element or substance that limits the amount of product made during a chemical reaction. Typically, there is also an excess reactant, or the amount of an element or substance left over after the reaction stops.