Experiment 40 Lab Report

Experiment 40 Lab Report - Abstract: The molar mass of...

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Abstract: The molar mass of cyclohexane was found in this experiment by using the known values in the Ideal Gas Law (P=718.6 Torr, V=0.141 L, T=373 K, R=0.08206 L*atm/mol*K) to find “n” (number of moles). The number of moles and the mass of a substance can be used to determine the molar mass of the substance. The molar mass of cyclohexane was given: 84.16 g/mol. The average value of the experimental molar mass was 41.42 g/mol with a -50.78 % error. Background: This experiment would be helpful when the molar mass of a liquid needs to be found, and the pressure and volume would remain constants. Finding molar mass is helpful when a substance is unknown. If the substance is unknown and you find the molar mass through this experiment, you can identify several possible substances that it could be, because the molar mass may not be a pure element, and do further tests to identify it. Procedure: Refer to Experiment 40 in Utecht, R.; Downey, T; Miller, M; Hirko, R. Chem 112L-General Chemistry I Laboratory, 3rd ed., Cache House, Inc: Eden Prairie, MN, 2009.
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This note was uploaded on 04/12/2010 for the course CHEM 57521 taught by Professor Hirko during the Spring '10 term at SD State.

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Experiment 40 Lab Report - Abstract: The molar mass of...

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