Final answer:
Limiting reagent stoichiometry problems focus on identifying the limiting reactant in a chemical reaction to calculate the amount of product that will be produced and the excess reactant left over.
Step-by-step explanation:
Limiting reagent stoichiometry problems involve identifying the limiting reactant (also known as the limiting reagent) in a chemical reaction. This is the reactant that gets completely used up first, thus determining the amount of product that can be formed. The main objectives when solving these problems are to calculate the amount of product produced from the limiting reactant, and to determine what amount of the excess reactant(s) will remain once the reaction has reached completion.
To identify the limiting reagent, one method is to compare the mole ratio of the reactants used in the reaction. Another approach is to calculate the grams of product each reactant can produce; the one yielding the smallest amount of product is the limiting reactant. Once the limiting reactant is determined, stoichiometry is used to calculate the mass of product produced. Then, to find the remaining excess reactant, the consumed mass of this reactant is subtracted from the initial mass provided.