Lab 7 luis.docx - Determination of Fe by UV-Vis...

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Determination of Fe by UV-Vis SpectroscopyRoom: 201File Number: Lab 7Analyst: Luis GinerAgency: The Department of Chemistry and Biochemistry, Lamar UniversityAddress: PO Box 10022, Beaumont, TX, 77710-0022Date: November 15, 2017Sample Number: 7Received Date: November 29, 2017Requester Name: Dr. Richard LumpkinBACKGROUND:The materials used in this lab such as 1,10-phenanthrolin, standard iron stock solution, hydroxyl ammonium chloride solution, sodium acetate solution, and the unknown were brought by Dr. Lumpkin in different sized containers some were plastic some were glass.TEST METHOD AND RESULTS:1.Pipetted 5 mL, 10 mL, 15 mL, 10 ml, and 25 mL of standard iron (II) to a 100 mL volumetric flask, then filled a 6thflask with distilled water to make a blank solution.2.Added 12 mL of unknown to a 7thflask.3.Then we added 1 mL of the hydroxylamine solution, 5 mL of the 1,10-phenanthrolin, and8 mL of the sodium acetate solution to each one of the 7 flasks.

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