Lab Report 12 - Chemistry 111 Experiment 12: Behavior of...

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Chemistry 111 Experiment 12: Behavior of Gases Thomas Meyer 11/05/07 Monday, Group #10 Dean Stuart
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Introduction: The objective of Experiment 12 was to show the relationships between different properties of gases, particularly focusing on pressure relating to volume and to temperature. This experiment also was intended to reinforce that all gases, or mixtures of gases, obey the same sets of rules, therefore allowing air to be used instead of a pure gas of a certain element. The knowledge of the behavior of gases which was achieved will be able to be applied in future experiments involving gases. This experiment related to topics in lecture such as several gas laws including Boyle’s Law which showed the inverse relationship between volume and pressure. Charles’s Law showed the direct relationship between temperature and pressure. Dalton’s Law of Partial Pressures showed that the pressures of individual gases added up to the total, allowing air to be suitable for the experiment. The Ideal Gas Law showed how all these values were related to each other. The lab techniques which were practiced during this experiment were proper use of MeasureNet with the pressure and temperature sensors, heating with a hot plate, using the magnetic mixing bar to stir the water bath, safe glassware handling, and correct usage of syringes and tubing.
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Procedure: The procedure followed was that given in the lab manual: Sprague, Alexander, Padolik & Steffel, “Laboratory Experiments for First Year Chemistry”, 6th ed. pp. 12-1 to 12-10. Results: Figure 1 is a table of volume and pressure values and a graph of V syringe vs 1/P air . Figure 2 is a graph of 1/P vs V. Figure 3 is a graph of P vs T. Figure 4 is a graph of the estimate of absolute zero. Figure 5 is lab notebook page 16 containing the prelab. Figure 6 is lab notebook page 17 containing experiment notes and calculations for the discussion
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Lab Report 12 - Chemistry 111 Experiment 12: Behavior of...

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