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Limiting Reactants and Percent Yield

The limiting reactant (or, limiting reagent) is a reactant in a chemical reaction that determines the amount of product that is formed. Identification of the limiting reactant makes it possible to calculate the theoretical yield of a reaction. Of the reactants involved, the reactant that runs out first – and limits the amount of products formed – is called the limiting reactant.  Using concepts from this topic, students become familiar with important chemistry skills – calculation of percent yield and the theoretical yield of a reaction’s products.

Lesson 1 (or “Day 1”) Material
Lesson 2 (or “Day 2”) Material
Lesson 3 (or “Day 3”) Material
Lesson 4 (or “Day 4”) Material

9:08 Limiting Reactants and Percent Yield

3:08 How To: Find Limiting Reagent (Easy steps w/practice problem)

3.5 More Pancakes: Limiting Reactant, Theoretical Yield, & Percent Yield


Compare Contrast and Debate

Kickoff Debate Background: xx

  • Position A: Honeycutt Science should x
  • Position B: Honeycutt Science should x

Resources Documents and Links

Notes and Notices

Instructor Emphasis:

  • Science & Engineering Practice: Plan and conduct investigations.
  • Cross-Cutting Concept: Scale, Proportion, and Quantity.