IV. DATA Name Trial 2 Trial1 Volume of fask with slopper 53.0 ml 3530 mL 335.imL

Question

IV. DATA Name Trial 2 Trial1 Volume of fask with slopper 53.0 ml 3530 mL 335.imL Volume of flask with stopper 51. mL aas. ImL| 201 Volume of water in flask 800mL 94.9 Volume of the cool gas Temperature of boiling water Temperature of the cool water 135-6 tore Barometric pressure Vapor pressure of water Partial pressure of cool gas 744 tom -7/-1 96 torr Lab Partner Mee MaleData Source for Trial 2 lunnd Sden Data Source for Trial 2 una Notes: 1·The data table should contain data in the units actually measured. Although you will need Kelvin temperatures for the general gas law, the measurements are made with a Celsius thermometer. So the data table should include Celsius temperatures. It would acceptable to include the Kelvin temperature in the table with the Celsius. For example, the table might read: 18.0 °C = 291.2 K. 2. Values that are lined up in the table can be subtracted directly as data. For example, the vapor pressure can be subtracted from the barometric above it to get the pressure of the cool gas. Of course the units in all three boxes must be the same. One cannot subtract torr from cm Hg or inches Hg without first converting to similar units. 3. Each experimenter is responsible to do the subtractions correctly even when data is shared.

Explanation / Answer

1) From the table we can find that:

V1 = 57.9 mL

P1 = 717.96 torr

T1 = 20.1oC = 293.1 K

P2 = 735.6 torr

T2 = 97oC = 97 + 273 = 370 K

Ideal gas equation: P1V1/T1 = P2V2/T2

Therefore, V2 = P1V1T2/P2T1 =  [(717.96 torr) x ( 57.9 mL) x ( 370 K)]/[(735.6 torr) x (293.1 K)] = 71.3 mL

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