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Soda Stoich Lab

Soda Stoich Lab. An exploration of theoretical, actual, and % yield. Soda Stoich Lab- Purpose. Calculate the theoretical yield of NaCl based on a known mass of NaHCO 3 Experimentally determine the actual yield of NaCl Calculate the %Yield for your experiment.

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Soda Stoich Lab

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  1. Soda Stoich Lab An exploration of theoretical, actual, and % yield

  2. Soda Stoich Lab- Purpose • Calculate the theoretical yield of NaCl based on a known mass of NaHCO3 • Experimentally determine the actual yield of NaCl • Calculate the %Yield for your experiment NaHCO3(s) + HCl(aq)  NaHCO3(s) + HCl(aq)  NaCl(aq) + H2CO3(g) NaHCO3(s) + HCl(aq)  NaCl(aq) + H2O(l) + CO2(g)

  3. Soda Stoich Lab- Procedure This lab will be graded using sections 2 (Data Collection) and 3 (Conclusion) of the Lab Rubric • Write a balanced chemical equation for the reaction between NaHCO3 and HCl • Find the mass of the evaporating dish and watch glass. Record this mass • Add about 1/4t of baking soda (NaHCO3) to the dish. Record the total mass • Calculate the mass of NaHCO3 in your dish • Calculate the theoretical yield of NaCl using stoichiometry • Use a dropper to drip HCl down the spout of the dish. Keep adding HCl until bubbling ceases • Leaving the watch glass on, boil off the excess liquid until only NaCl remains • Let the dish cool for 5 minutes, then weigh it again with the watch glass. Record this mass • Share data to get at least 3 trials • Calculate the mass of NaCl produced • Calculate the %yield for your trial • Turn in: data table, work for calculations, graph, conclusion, sources of error and improvements

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