Lab 2 CHem - 5-1 Boyles Law Pressure and Volume Robert...

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Chapter 1 / Exercise 45
Precalculus
Hostetler/Larson
Expert Verified
5-1: Boyle’s Law: Pressure and VolumeRobert Boyle, a philosopher and theologian, studied the properties of gases in the 17th century. He noticedthat gases behave similarly to springs; when compressed or expanded, they tend to ‘spring’ back to theiroriginal volume. He published his findings in 1662 in a monograph entitled The Spring of the Air and ItsEffects. You will make observations similar to those of Robert Boyle and learn about the relationshipbetween the pressure and volume of an ideal gas.1. Start Virtual ChemLab and select Boyle’s Law: Pressure and Volume from the list of assignments.The lab will open in the Gases laboratory.2. Note that the balloon in the chamber is filled with 0.300 moles of an ideal gas (MW = 4 g/mol) at atemperature of 298 K, a pressure of 1.00 atm, and a volume of 7.336 L. To the left of the PressureLCD controller is a lever that will decrease and increase the pressure as it is moved up or down; thedigit changes depending on how far the lever is moved. Digits may also be clicked directly to type inthe desired number. You may want to practice adjusting the lever so that you can decrease andincrease the pressure accurately. Make sure the moles, temperature, and pressure are returned to theiroriginal values before proceeding.3. Click on the Lab Book to open it. Back in the laboratory, click on the Save button to start recording P,V, T, and n data to the lab book. Increase the pressure from 1 atm to 10 atm one atmosphere at a time.Click Stop to stop recording data, and a blue data link will appear in the lab book. To help keep trackof your data links, enter ‘Ideal Gas 1’ next to the link.4. Zoom Out by clicking the green arrow next to the Save button. Click Return Tank on the gascylinder. On the table underneath the experimental chamber is a switch to choose Real gases or Idealgases. Click on the Ideal Gases and choose the cylinder labeled Ideal 8 (Ideal 8 MW = 222 g/mol).Click on the balloon chamber to Zoom In and set the temperature, pressure, and moles to 298 K, 1.00atm, and 0.300 moles, respectively. Repeat the experiment with this gas labeling the data link as‘Ideal Gas 8.’5. Zoom Out by clicking on the green arrow next to the Save button. Click on the Stockroom and then onthe Clipboard and select Balloon Experiment N2. Again, set the temperature, pressure, and moles to298 K, 1.00 atm, and 0.300 moles, respectively. You may have to click on the Units button to change
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Precalculus
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Chapter 1 / Exercise 45
Precalculus
Hostetler/Larson
Expert Verified
6. Select the lab book and click on the data link for Ideal Gas 1. In the Data Viewer window, select allthe data by clicking on the Select All button and copy the data using CTRL-C for Windows or CMDCfor Macintosh. Paste the data into a spreadsheet program and create a graph with volume on the xaxisand pressure on the y-axis. Also create a graph for your data from Ideal Gas 8 and Real Gas N2.

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