Notes - Section 3.6-3.7

Notes - Section 3.6-3.7 - limiting reagent because it...

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Paul Jackman September 24, 2009 Chemistry CHE 106 – M029 Section 3.6-3.7 Notes 3.6 Quantitative Information from Balanced Equations The mole concept allows us to convert the coefficients into the masses of the substances The coefficients in a balanced chemical equation indicate both the relative numbers of molecules (or formula units) in the reaction and the relative numbers of moles The conversion sequence is: Grams reactant moles reactant moles product grams product 3.7 Limiting Reactants The reactant is completely consumed in a reaction is called either the limiting reactant or
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Unformatted text preview: limiting reagent because it limits the amount of product formed – The other reactants are sometimes called either excess reactants or excess reagents Theoretical Yields – The quantity of product that is calculated to form when all of the limiting reactant reacts is called the theoretical yield – The amount of product actually obtained in a reaction is called the actual yield – The percent yield of a reaction relates the actual yield to the theoretical (calculated) yield: o Percent Yield = actual yield X 100% Theoretical yield...
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