Postlab - Joseph Pak Chemistry 115 Lab Jordan Fine Tuesday...

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Joseph Pak Chemistry 115 Lab Jordan Fine - Tuesday 23 October 2007 Lab 7: Behavior of Gases (I) I. Purpose To determine the fluctuations in the behavior of gases with regard to volume as pressure on the gas is varied. IV. Results Table 1: Volumes and Pressures of air Volume pres sed (mL) Volume mark of Syringe (mL) Pressure sensor (torr) Pressure air (torr)* P air (atm) 1/P air (atm) Volume Mark of air (L)** 2 mL 0 mL 686.0021 torr 1445.002 torr 1.901319 atm 0.525951 atm -1 0.002058 L 1 mL 1 mL 224.3012 torr 983.3012 torr 1.293817 atm 0.772907 atm -1 0.003058 L 0 mL 2 mL 5.3013 torr 764.3013 torr 1.005660 atm 0.994372 atm -1 0.004058 L -1 mL 3 mL -164.409 torr 594.591 torr 0.782357 atm 1.278190 atm -1 0.005058 L -2 mL 4 mL -255.784 torr 503.216 torr 0.662126 atm 1.510286 atm -1 0.006058 L -3 mL 5 mL -332.323 torr 426.677 torr 0.561417 atm 1.781207 atm -1 0.007058 L -4 mL 6 mL -386.634 torr 372.366 torr 0.489955 atm 2.041003 atm -1 0.008058 L -5 mL 7 mL -424.921 torr 334.079 torr 0.439578 atm 2.274911 atm -1 0.009058 L -6 mL 8 mL -460.257 torr 298.743 torr 0.393083 atm 2.543993 atm -1 0.010058 L -7 mL 9 mL -486.261 torr 272.739 torr 0.358867 atm 2.786547 atm -1 0.011058 L -8 mL 10 mL -507.821 torr 251.179 torr 0.330499 atm 3.025731 atm -1 0.012058 L -9 mL 11 mL -528.167 torr 230.833 torr 0.303728 atm 3.292424 atm -1 0.013058 L -10 mL 12 mL -543.917 torr 215.083 torr 0.283004 atm 3.533520 atm -1 0.014058 L -11 mL 13 mL -558.965 torr 200.035 torr 0.263204 atm 3.799335 atm -1 0.015058 L -12 mL 14 mL -572.018 torr 186.982 torr 0.246029 atm 4.064562 atm -1 0.016058 L -13 mL 15 mL -581.950 torr 177.050 torr 0.232961 atm 4.292573 atm -1 0.017058 L -14 mL 16 mL -591.981 torr 167.019 torr 0.219762 atm 4.550380 atm -1 0.018058 L -15 mL 17 mL -601.155 torr 157.845 torr 0.207691 atm 4.814850 atm -1 0.019058 L -16 mL 18 mL -608.698 torr 150.302 torr 0.197766 atm 5.056486 atm -1 0.020058 L -17 mL 19 mL -615.492 torr 143.508 torr 0.188826 atm 5.295872 atm -1 0.021058 L -18 mL 20 mL -621.325 137.675 torr 0.181151 atm 5.520247 atm -1 0.022058 L *P air was calculated by adding 759 torr, the pressure of the open syringe, to P sensor **V air was calculated by adding 2.0582 mL, the volume of tubing, to V syringe Graph 1:
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Volume (syringe) vs. Pressure (sensor) -800 -600 -400 -200 0 200 400 600 800 0 5 10 15 20 25 Volume (mL) Pressure (torr) This chart is a direct plot of the volume readings on the syringe with the corresponding pressure readings by the sensor. This plot shows the inverse relationship between volume and pressure. However, in order to gain more information from these points, the data must be transformed to give a linear plot.
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