IDEALGASLAWACTIVITY (1)-1
.pdf
School
Denver School of Science and Technology - Stapleton High School**We aren't endorsed by this school
Course
BIO 301
Subject
Chemistry
Date
Dec 18, 2024
Pages
3
Uploaded by GrandWombat3932
Group: Favour and BlessedCourse:AP Physics B / Algebra-Trig Based Intro College CourseLearning Goals:●Investigating relationship between 3 gas law variables(pressure, temperature, volume, and number of moles) bykeeping the fourth variable fixed●Graphical Interpretation of data (students collect data forpairs of gas law variables and graph their data)Simulation Used:●Gas PropertiesType of activity:●Lab / modelingSet-up:●In class group activityIt is important that the air in your tires be kept at a properpressure. The volume of your tires, amount of air moleculespumped into your tires, and the temperature will all affect the airpressure. In this activity, you will investigate how all of thesevariables are related.1.Investigate how pressure varies with temperature as volume andnumber of moles are held constant. Explain qualitatively (bywatching the molecules in the simulation) how changing thetemperature affects the pressure. Predict the mathematicalrelationship between pressure and temperature.if the heat increases the pressure does and if you decrease it with the ice the pressuredecreases making it go slow.
2. Generate and collect data of pressure and temperature (withvolume and number of moles held constant). Be sure to collectenough data points over a fairly wide range. Make a table and agraph of your data. Determine the mathematical relationshipbetween pressure and temperature that best fits your data.Confirm your conclusion by choosing appropriate powers ofpressure and temperature for the x and y axes so that yourfunction models the data as close as possible. Verify or rejectyour prediction in step 1.With 500 moles, the temperature is at 292 K and the pressure is at 48-49 atm. Thetemperature is at 372 K and the pressure is at 61-62 atm. The temperature is at 489 Kand the pressure is 81-82 atm. The temperature is at 137 K and the pressure 22-23atm. For this relationship, the temperature is the x value and the pressure is the yvalue since it is affected by the pressure.3. Repeat steps 1 and 2, except vary volume while keepingtemperature and number of moles constant.You can’t directlymeasure volume in this simulation. Think about a quantity thatyou can measure that is related to volume.If you expand the volume the pressure gets lower, and if you make the volume smallerthe pressure increases. We can measure volume by finding density or mass.4.From your investigations in steps 1 through 3, construct therelationship between pressure and volume and temperature (withthe number of moles held constant).Confirm your relationshipby collecting data and then graphing pressure on the y-axis andan appropriate function of volume and temperature on the x-axis.They are all related because temperature and volume can increase or decrease thepressure.5.Predict the relationship between number of moles andtemperature with pressure and volume held constant.Explainconceptually in terms of what is happening on the molecular levelwhy this relationship makes sense. Collect data to confirm orreject your proposed relationship.Nothing would really happen here since nothing has changed.