Limiting reagent. Learn how to identify the limiting reagent in a chemical reaction using two methods: comparing reactant amounts or product amounts. The limiting reactant (or limiting reagent) is the reactant that gets consumed first in a chemical reaction and therefore limits how much product can be formed. Learn about what a limiting reactant is, how to find a limiting reagent, and see worked out example problems on the limiting reagents. This is an important concept in stoichiometry and Chemistry exams. See examples of limiting reagent calculations and solved problems with balanced chemical reactions. A limiting reagent is the reactant in a chemical reaction that is completely consumed first, thus determining the maximum amount of product that can be formed. See examples, definitions, and applications of limiting reagent concept. . Learn what a limiting reagent is and how to find it using stoichiometry. In a chemical reaction, the limiting reactant (or limiting reagent) is the substance that is completely used up first, stopping the reaction from continuing and thus determining the maximum amount of product that can be formed. mjfjsc ldgl tjkz uuohf vqmh bahzn igcwb bopbo khsnfq ymubi