CHEM 1201 Lecture : Chem 1201 Notes Feb 02
Document Summary
It is not necessary to have all reactants present in stoichiometric amounts. Often, one or more reactants is present in excess. Then, at the end of the reaction, those reactants that are left over will still be in the reaction mixture. The one or more reactants which are completely consumed are called the limiting reactants. If the reagent are given in g convert g into moles using mw or mm. The reagent with the smallest mole value, from using stoichiometry, is the limiting reagent: determine the theoretical yield and the percent yield. The amount of product predicted from stoichiometry (taking into account limiting reactants) is called the theoretical yield. The actual yield of a reaction is the amount of product actually obtained in the reaction. The percent yield relates the actual yield (amount of material recovered in the laboratory) to the theoretical yield. Percent yield = actual yield / theoretical yield x.
