(Solved): Limiting Reagent and Percent Yield Practice In a chemical reaction with more than one reactant, the ...

Limiting Reagent and Percent Yield Practice In a chemical reaction with more than one reactant, the limiting reagent is the reactant that is consumed first. This causes the reaction to stop. The other reagent is called the excess reagent. The theoretical yield is determined by the limiting reagent. Percent yield is the actual yield divided by the theoretical yield, then convert to % by multiplying by 100. 35.6 g of Al is reacted with 99.3 g of iron(III)oxide to produce 66.28 g of iron according to the reaction below. Calculate the percent yield for this reaction. 2 Al + Fe2O3 ??2Fe +_ Al2O3 289, ???? - a) Balance the equation. b) Determine the moles of product (Fe for this reaction) made by each reagent. Fe Whichever reagent produced fewer moles of product is the limiting reagent.. What is the limiting reagent for this reaction? d) Calculate the theoretical yield in grams from the limiting reactant. e) Using your theoretical yield from c and the actual yield, determine the percent yield. 85