Lab Experiment Stoichiometry of a Precipitation Reaction Essay

The purpose of this experiment is to apply stoichiometry to anticipate how such(prenominal) of a product will be do in a precipitation reaction, to notice the reactants and products of the reaction correctly, to figure come in the actual ease up vs. the theoretical deport and to calculate the percent progeny. numberFirst, 1.0 g of CaCl22H2O was regulate into a 100-mL beaker and 25 mL of distilled body of water was added. The dickens ingredients were stirred to create a calcium chloride solving. Then, stoichiometry was used to determine how much Na2CO3 was needed for a full reaction First, 1 g of CaCl22H2O was reborn to moles 0.00680 moles. The mole ratios of CaCl22H2O and Na2CO3 was seen to be 11. Then, moles of Na2CO3 were reborn to gravitational constants 0 .72 g. The measure of CaCo3 was predicted to be 0.00680 moles. 0.00680 moles converted to grams is 0.68 grams.Then, 0 .72 grams of Na2CO3 was measured into a piece of music cup because that was the measure calcu lated for Na2CO3 using stoichiometry in the step before. 25 mL of distilled water was added and stirred. Then, that solution was poured into the 100 mL beaker and it formed a decrease (calcium carbonate) like a shot with the calcium chloride solution.Next, a drivelation system was set up A meek cup was placed inside a larger cup for substantiate and a funnel placed in to the small cup. Then, a 1.1 gram circle of riddle paper was folded in half twice and virtuoso section of the folds in the filter paper was opened to fit into the funnel. Then, the solution was poured slowly into the funnel. After all the liquid strained through the filter system, the filter paper with its contents which did not strain through was put aside on a few paper towels to dry. Once it was dry, the filter paper was weighed again and the weight was 1.9 grams. The initial weight of the filter paper was subtracted from 1.9 grams, leaving 0.8 grams of precipitate.Then, using the theoretical yield and actual yield, the percent yield was figured out .80/ .68= 1. 176 117.6%.Experimental Results & Discussion of ObservationsCalculations1 g of CaCl22H2O was converted to moles 0.00680 molesmole ratios of CaCl22H2O and Na2CO3 11moles of Na2CO3 were converted to grams .72 g. 0.00680 moles converted to grams 0.68 gramsinitial weight of the filter paper subtracted from final weight with precipitate 1.9 1.1= .8 g using the theoretical yield and actual yield, the percent yield was calculated .80/ .68= 1. 176 117.6%.Additional QuestionsNo additional questions.ConclusionsThis experiment was successful. Stoichiometry was used to predict how much of a product will be made in a precipitation reaction, the reactants and products of the reaction were measured, the actual yield vs. the theoretical yield was figured out and the percent yield was calculated.References1. 1. LabPaqLab Manual thermal Content of Food by Peter Jaschofnig Ph.D.Pgs 92-97