Gas Law Experiment - unknown liquid using the Dumas method....

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Gas Law Experiment: Determination of the Molar Mass of a Volatile Liquid Eric Ly November 5, 2007 Lab Section: H
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Purpose: The purpose of this experiment is to use the property of gases as defined in the ideal gas laws to determine the molecular weight of a volatile liquid using the Dumas’ method. Procedure: Pages 21-22 in composition book Data: See attached Calculations: Summary of Results: Unknown number: #1 Molar mass of Unknown (Trial 1) 68.2 g/mol Molar mass of Unknown (Trial 2) 58.6 g/mol Molar mass of Unknown (Average) 63.4 g/mol Deviation +/- 9.6 Conclusion: The purpose of this experiment was to determine the molar mass of an
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Unformatted text preview: unknown liquid using the Dumas method. This was achieved when Unknown # 1 was put through the Dumas method and the molecular weight was determined. Some sources of error could include not measuring the weight of the various liquids correctly. Another source of error could include not waiting till all stream of steam stopped coming from the pin hole in the aluminum since it was hard to see with the steam coming from the boiling water itself. Also in calculating the exact volume of the flask mistakes could have been made in either the calculations or in getting the exact temperature....
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This note was uploaded on 04/10/2008 for the course CHEMISTRYL 110 taught by Professor Kapoor during the Fall '08 term at Quinnipiac.

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Gas Law Experiment - unknown liquid using the Dumas method....

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