# Stoichiometry Percent Yield

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Experiment six included both stoichiometry and the percent yield. Throughout the experiment, we were interested in the end product but also with the efficiency of the operation (p. 89). This is most accurately known as the percent yield, which is the actual yield over the theoretical yield multiplied by 100. This will give you the percent yield (p. 89). Stoichiometry is a part of chemistry that deals with the calculations of molar masses of reactants and products within a chemical reaction. Stoichiometry tends to deal with mass-to-mass problems and often includes molar ratios, balancing equations, along with conversions between moles and grams. In order to find the percent yield, stoichiometry must be used to find the numbers needed to plug into the percent yield equation. Stoichiometry helps find the theoretical yield, which is needed to find the percent yield. For experiment six, the lab book stated the percent yield of a highly effective synthesis would range from 90-100%…show more content…
The principal of the law of conservation of matter is that matter cannot be created nor destroyed. The law of conservation of matter states that the mass of the reactants and products must be consistent. Normally the percent yield is 100% the maximum possible yield or it can even be a little bit lower due to the losses or the incomplete reactions. The higher percentage I got may be a result of excess reactant, inaccurate measurements, contamination from the water or liquids used, or possibly even that the starting substance did not fully react after using the filtration methods. This could be the case of the percent yield from my experiment. The actual yield, which was given, of the experiment was much greater than the theoretical yield, which was calculated. This could be the other possible cause of why the overall percent yield was greater than the normal 90-100% (pg.