Gay-Lussac`s Law C-14
Contents
1. 1 NeuLog EJ Experiment C 14 Gay Lussac s Law A Objectives To learn about the Ideal Gas Law and Gay Lussac s Law To investigate the relationship between temperature and pressure in a sealed chamber while heating it up Modules and Sensors PC NeuLog application USB 200 module 1 NUL 203 Temperature logger sensor ES NUL 210 Pressure logger sensor Equipment and Accessories s Gas study device Perforated rubber stopper 2 Non perforated rubber 1 stopper 50 ml syringe 1 Candle 3 Lighter 1 The items above are included in the Gas kit GAS KIT Experiment C 14 Gay Lussac s Law Ver 3 0 3 2 NeuLog EJ Introduction An ideal gas can be characterized by three parameters pressure volume and temperature for a certain amount of gas The law that shows the relationship between these factors is called the Ideal Gas Law PV nRT where P is the pressure of the gas in atm units V is its volume in L units n is the number of moles one mol 6 022 10 molecules R is the gas constant atm L mol K and T is its temperature in K units Suppose we double the temperature in K of a sample of gas while the volume and number of molecules remain the same The pressure will also be doubled According to Gay Lussac s law for a given amount of gas held at a constant volume the pressure is proportional to the absolute temperature P Kel and Plo Pol Kg Is the proportionality co2. described in the user manual beforehand 8 Run the NeuLog application and check that the sensors are identified Experiment C 14 Gay Lussac s Law Ver 3 0 3 5 NeuLog x settings 9 Click on the On line Experiment icon Gas in the NeuLog main icon bar 10 Click on the pressure sensor s module box 11 Click on the Range button 12 Select the kPa button to change the sensor s mode NeuLog 4l EA To E gt Back Experiment Erase Single un Setup Experiment Step Experiment Pressure id 1 Range kPa EE Be Grid Graph Table Point Area tt 13 Click on the Experiment Setup icon and set the Experiment duration to 3 minutes sampling rate to 30 per minute Experiment C 14 Gay Lussac s Law Ver 3 0 3 6 NeuLog EJ Testing and measurements 14 15 16 17 18 Carefully light the candles and wait about 30 60 seconds before starting the measurement Click on the Run Experiment icon to start the measurement If the temperature reaches 50 C stop the measurement It is recommended to hold the pressure sensor s body during the measurement Blow off the candles after the measurement is over and do not touch the device while it Is still hot l Click on the Experiment Setup icon and then click on the X axis Time button Click on the Temperature button to plot a temperature vs pressure graph In order to focus on the desired range click on the Zoom icon Q locate the mouse cursor a
3. nstant Kg n R V In this activity we will raise the temperature of a gas in a container while keeping the volume constant in order to measure how this affects the pressure of the gas Experiment C 14 Gay Lussac s Law Ver 3 0 3 3 NeuLog EZ Procedure Experiment setup Note You will be working with an open flame Make sure not to have any flammable material in the proximity of the experiment Be very careful when working with high temperatures 1 Set up the experiment as shown in the picture below 2 Place the two perforated stoppers and the non perforated stopper in the device Each perforated stopper should be at one end 3 Insert the temperature sensor probe in one perforated stopper 4 Optional check to verify that there is no air leak insert a syringe with its plunger at the 50 ml position in the other perforated stopper Press the syringe s plunger release it and watch the plunger going back to the starting position Remove the syringe and put the pressure sensor in its place D Place three candles under the device do not light them yet Experiment C 14 Gay Lussac s Law Ver 3 0 3 4 NeuLog EJ sensor setup 6 Connect the USB 200 module va to the PC 7 Check that the temperature and the pressure sensors are connected to the USB 200 module in a chain Note The following software functions are explained in short It is recommended to practice the NeuLog application functions as
4. t a point above the graph and press its left button keep it pressed and create a rectangle that includes the whole range Experiment C 14 Gay Lussac s Law Ver 3 0 3 7 NeuLog EF 19 Your graph should be similar to the following oo Q Back Save Experiment Experiment NeuLog Temperature C 32 72 Q leis ke BB BS Unzoom Zoom Zoom Select Line Show Grid Graph Table Point Area All Fit Zone Width Functions 40 9 20 Save your graph 21 Click on the Show Functions icon is and then click on the temperature button on the left of the screen 22 Click on the Linear Fit button CS ee Al Linear Temperature NeuLog Back Save Open a EE Experiment Experiment Temperature id 1 106 Pressure kPa Manual Values z Undo all functions Back Temperature C 32 72 36 Qaleb EhM Unzoom Zoom Zoom Select Line Show Grid Graph Table Point Area All Fit Zone Width Functions 23 You will get an equation that describes the relation between temperature and pressure in the gas devise Experiment C 14 Gay Lussac s Law Ver 3 0 3 8 NeuLog EJ Summary questions 1 Were you able to get a straight line What would have been the pressure if you had kept heating the device to 50 C Explain the connection between temperature and pressure in terms of molecule velocity What happens when you heat up an elastic balloon Explain your answer by using the Ideal Gas Law PV nRT What is
5. the name of the specific law that describes what happens Experiment C 14 Gay Lussac s Law Ver 3 0 3
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