2. • a. Identify mole ratios of reactants and
products from balanced chemical
equations
• b. Perform stoichiometric calculations
related to chemical equations
• c. Define theoretical, actual, and percent
yield of reactions
• d. Calculate theoretical and percent yield
of a reaction
• e. Identify the limiting and excess
reagent(s) of a reaction
• f. Calculate reaction yield in the presence
of a limiting reagent
3. Keywords for the Concept:
• a. Stoichiometry
• b. Limiting reagent
• c. Theoretical yield
• d. Actual yield
• e. Percent yield
4. Amounts of Reactants and Products
• Stoichiometry is the study of the quantities of
materials consumed and produced in chemical
reactions. From the balanced chemical equation, we
will be able to:
⚬ a. Determine how much products will be
produced from a specific amount of reactants
⚬ b. Determine the amount of reactants needed to
produce a specific amount of products
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10. Amounts of Reactants and Products
Limiting Reagents
• The reactant used up first in the chemical reaction
is called the limiting reagent. Excess reagentsare
reactants present in quantities greater than what is
needed by the reaction.
