Experiment 15b

Experiment 15b - Experiment 15: The Athenium Baking Soda...

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Experiment 15: The Athenium Baking Soda Company’s Quality Control October 30, 2007 The Athenium Baking Soda Company’s Quality Control *A.B.S.C is the acronym for the Athenium Baking Soda Company
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Purpose of the Experiment : To identify the purity as well as the chemical characteristics of the impurities present in a sample of baking soda manufactured by the A.B.S.C, Athenium Baking Soda Company. Background Information : NaHCO 3 , Sodium Bicarbonate (or sodium hydrogen carbonate), is commonly known as baking soda. Baking soda is natural and is a compound that has many uses, such as a cleaning product for household items, fruit, and even for parts of the body such as the hands or the face, as well as the teeth when used in tooth paste. Baking soda is also a popular deodorizer, a fire extinguisher, and can be used in medications to help reduce acid complications in the stomach. The Athenium Baking Soda Company has come up with one method of making baking soda, to react crystalline ammonium hydrogen carbonate with brine. (Equation 1) NH 4 HCO 3 (s) + NaCL (aq) Na HCO 3 (aq) + NH 4 Cl (aq) Brine is salt water that has a large concentration of sodium chloride, potassium chloride, lithium chloride, and
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calcium chloride contained inside of the water. When the preferred solid product, NaHCO 3 , is dried, the NaHCO 3 can be filtered to determine if any contaminating products, such as KCl, LiCl, and CaCl 2 , are inside of the NaHCO 3 . Manufacturing companies, such as the A.B.S.C., often have a hiring process for determining what quality control group the company wants to hire by setting up a experiment using a sample with contaminants pre-made and set up by the manufacturing company, and asking the quality control applicants to determine what contaminants are present in the sample, or in the baking soda as with the A.B.S.C. . The job of the quality control group, once hired, is to determine the purity, grade or quality, any errors in structure, composition, and the lifespan and durability of the baking soda. The applicants, who participate in teams of four, that most efficiently and accurately determine the contaminants present in the baking soda will be given the job. List of Chemicals: - Sodium carbonate (solid, primary standard base) - Baking Soda sample (mixture) - Approximately 1.0 M hydrochloric acid solution - 0.1 M Potassium chloride solution
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- 0.1 M Lithium chloride solution - 0.1 M Calcium chloride solution List of Special Equipment needed: - MeasureNet spectrophotometer and nichrome wires - MeasureNet pH probe and drop counter - Volumetric flasks - Beral pipets - Crucible and Lid - Bunsen Burner - Magnetic stir bar - Magnetic stir plate - Kimwipes ® Procedure: CAUTION: It is mandatory that students wear eye protection that has been approved by the department while performing this experiment. Wash your hands before touching your eyes, and after you are finished with the experiment. Part I:
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This note was uploaded on 04/03/2008 for the course CHEM 1211L taught by Professor Stanton during the Fall '08 term at UGA.

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Experiment 15b - Experiment 15: The Athenium Baking Soda...

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