Limiting reactant is also called limiting reagent. The limiting reactant or limiting reagent is the first reactant to get used up in a chemical reaction. Once the limiting reactant or limiting reagent gets used up, the reaction has to stop and cannot continue. After the limiting reactant or limiting reagent is used up and the reaction stops, there is extra of the other reactants left over. Those are called the excess reactants. In this video, we'll first learn about limiting reactant and limiting reagent by comparing chemical reactions to cooking recipes. We'll look at how to calculate limiting reactant and limiting reagent using cooking ingredients, and then looking at an actual stoichiometry problem,

We'll practice limiting reactant and excess reactant by working through a problem. These are often also called limiting reagent and excess reagent. The limiting reactant or the limiting reagent is the first reactant to be used up during a chemical reaction. Once the limiting reactant or limiting reagent is used up, no more product can form. In order to solve stoichiometry problems with limiting reactant or limiting reagent, we need to figure out which of the reactants is the limiting reactant or limiting reagent. Then, we see how much product can be formed by using the maximum amount of the limiting reactant or limiting reagent. The excess reactant or excess reagent is what is left over after all of the limiting reactant or limiting reagent has been used up.

Stoichiometry problem where we find the limiting reagent and calculate grams of product formed. . Created by Sal Khan.

Chemistry doesn't always work perfectly, silly. Molecules are left over when one thing runs out! Also we never get all of the products that we thought we might by doing the math. You gotta know about the limiting reagents and the percent yield! Don't worry, it's as easy as bologna sandwiches.