# Use the weight of fat taken and the reaction to find

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Use the weight of fat taken and the reaction to find the theoretical yield (weight) of soap bar?
2Na
Sample CalculationsC54H110O6 Molar MassSymbolElementAtomic weightAtomsAtomic Mass (g/mol)CCarbon12.010754648HHydrogen1.00794110110OOxygen15.9994696Total854number of moles = weight in grams used / molecular weight 58.2/854 = 0.0681 molesC18H35O2Na Molar Mass SymbolElementAtomic weightAtomsAtomic Mass (g/mol)CCarbon12.010718216HHydrogen1.007943535OOxygen15.9994232NaSodium22.98976928123Total306C18H35O2Na x 3 = 306 x 3 = 918g/moltheoretical obtainable weight = number of moles x molecular weighttheoretical obtainable weight= 0.0681 x 918 = 62.516g% yield = (actual yield (weight of soap formed)/theoretical yield) X 100% yield = 82.724/62.516 = 132.32%Limitations of ResultsThe limitations of results could be that the vegetable shortening was not weighed correctly on the triple beam balance along with the NaOH pellets. Another limitation was that notall the soap was transferred out of the cup to weigh and some was stuck in the cup. Another