General Chemistry I (CHEM 101) Stoichiometry: Limiting Reagent, Theoretical Yield, and Percent Yield Practice Problems
University of Washington
General Chemistry I (CHEM 101) | Practice Problems

Overview
A Gen Chem stoichiometry problem set for finals: converting units, identifying limiting reagent, computing theoretical yield, and calculating percent yield with clear setup steps.

Key topics
•mole-mass-volume conversions
•balanced equation coefficient ratios
•limiting reagent identification
•theoretical yield and actual yield
•percent yield and sources of loss

Suggested study tasks
•solve 10 limiting-reagent problems (mass-mass)
•solve 6 gas-volume stoichiometry problems at STP conditions
•compute theoretical yield for 8 reactions
•compute percent yield for 8 scenarios
•write a 6-step stoichiometry checklist you can reuse on exams

Common pitfalls
•forgetting to balance the equation first
•using grams instead of moles for ratios
•choosing limiting reagent by smallest mass
•dropping units during conversions
•percent yield over 100% due to wrong significant figures or wrong limiting reagent