1.23 In a reaction
Identify the limiting reagent, if any, in the following reaction mixtures.
(iv) 5 mol A + 2.5 mol B
Here according to the reaction 1 atom of A reacts with 1 molecule of B.
Therefore, 2.5 moles of B molecules will react with only 2.5 moles of A atoms, thereby left with 2.5 moles of A unreacted.
Hence, B limiting reagent in this reaction.