# Pressure and temperature relationship in gases lab report

### Pressure-Temperature relationship in gases lab by Fredie Rodriguez on Prezi

In this experiment, you will study the relationship between the temperature of a gas sample and the pressure it exerts. Using the apparatus shown in Figure 1. The purpose of this lab was to experiment with an ldeal Gas in two separate parts . Part of air in a water bath but assume the pressure and temperature were at. Pressure-Temperature Relationship in Gases. By Brian Su, Andrew Wang, and Gabriel Lee. Through this lab, the students observed the relationship between.

Using the apparatus shown in Figure 1, you will place an Erlenmeyer flask containing an air sample in water baths of varying temperature. Pressure will be monitored with a Pressure Sensor and temperature will be monitored using a Temperature Probe.

The volume of the gas sample and the number of molecules it contains will be kept constant.

Pressure and temperature data pairs will be collected during the experiment and then analyzed. From the data and graph, you will determine what kind of mathematical relationship exists between the pressure and absolute temperature of a confined gas. You may also do the extension exercise and use your data to find a value for absolute zero on the Celsius temperature scale.

Obtain and wear goggles. Prepare a boiling-water bath. Put about mL of hot tap water into a l L beaker and place it on a hot plate. Turn the hot plate to a high setting. Prepare an ice-water bath.

Put about mL of cold tap water into a second 1 L beaker and add ice.

### Pressure-Temperature Relationship in Gases by Susan Price and Cindy Oubre

Put about mL of room-temperature water into a third 1 L beaker. Put about mL of hot tap water into a fourth 1 L beaker. Choose New from the File menu. If you have older sensors that do not auto-ID, manually set up the sensors.

Obtain a rubber-stopper assembly with a piece of heavy-wall plastic tubing connected to one of its two valves. Attach the connector at the free end of the plastic tubing to the open stem of the Gas Pressure Sensor with a clockwise turn. Leave its two-way valve on the rubber stopper open lined up with the valve stem as shown in Figure 2 until Step 6d. Insert the rubber-stopper assembly into a mL Erlenmeyer Figure 2 flask. Twist the stopper into the neck of the flask to ensure a tight fit.

## PRESSURE - TEMPERATURE RELATIONSHIP IN GASES LABQUEST 7

Close the 2-way valve above the rubber stopper—do this by turning the valve handle so it is perpendicular with the valve stem itself as shown in Figure 3.

The air sample to be studied is now confined in the flask. On the Meter screen, tap Mode. Change the mode to Selected Events. Change the graph settings to display a graph of pressure vs. Tap the Graph tab. Tap on the x-axis label and choose Temperature. Place the flask into the ice-water bath. Make sure the entire flask is covered see Figure 3.

Place the Temperature Probe into the ice-water bath. When the temperature and pressure readings have both stabilized, tap Keep to store the temperature and pressure readings. Repeat Step 10 using the room-temperature bath. Repeat the Step 10 procedure using the hot-water bath. Remove the boiling water from the hot plate. Do not burn yourself or the probe wires with the hot plate.

To keep from burning your hand, hold the tubing of the flask using a glove or a cloth. After the temperature probe has been in the boiling water for a few seconds, place the flask into the boiling-water bath and repeat Step Examine the data points along the displayed graph of pressure vs.

As you move the cursor right or left, the temperature X and pressure Y values of each data point are displayed below the graph. Record the data pairs in your data table.

Round pressure to the nearest 0. Examine your graph of pressure vs.

We will use the Kelvin absolute temperature scale. Move the cursor up and to the right until the L3 heading is highlighted. Record the Kelvin temperature values in your data table.

Follow this procedure to calculate regression statistics and to plot a best-fit regression line on your graph of pressure vs.

The linear-regression statistics for these two lists are displayed for the equation in the form: If the relationship between pressure and absolute temperature is a direct relationship, the curve should be linear and pass through or near the origin. Examine your graph to see if this is true for your data. Use the TI-Graph Link cable and program to transfer the graph of pressure vs.