Mini-lecture: Limiting, excess, and theoretical yield
pHET Simulation: Limiting and Excess Reactant
Sample problem mini-lecture: Theoretical yield, limiting and excess reactant
Limiting, Excess Reactant and Theoretical Yield
Overview
This module is an introduction to the relationship between stoichiometric coefficients, limiting and excess reactant, and theoretical yield. Includes a worked example asking for theoretical yield given two starting masses, to identify the limiting reactant, and calculate the percent yield from a given hypothetical "actual" yield.
Applications of Stoichiometry
Once we have mastered balancing chemical reactions using stoichiometric coefficients, we can apply formula weights (molar masses) to determine a number of quantities.
We can calculate how much product we can make.
We can calculate how much reactant we need to start with if we know how much product we want to end up with.
Example problem: Theoretical Yield and Limiting reactant
This particular example does not include how much excess reactant remains.
Here is an example of a problem that asks for theoretical yield, limiting reactant, and percent yield.
Interactive Simulation: Limiting and Excess Reactant
This simulation allows you to choose sandwiches or molecules to visualize what theoretical yield, limiting reactant, and excess reactant look like.