Lab Report: Pressure Temperature Volume
EXPLORING GAS LAWS-
Astrella Rosano
Lab Partners: Sam Youngdale, Charlie Stalzer, Ni Xhengzhuan.
TA: Giang Nguyen
Date Submitted: September 28, 2012
Section: Chemistry 1310-L10 Honor Pledge: I did not copy this work from any others student(s), current students in lab, or old lab reports. Signature: ____________________
Raw Data- A. Exploring Pressure-Volume Relationships Pressure (torr) | Volume (mL) | 1384.2 | 5 | 1198.1 | 6 | 1038.1 | 7 | 921.3 | 8 | 826.2 | 9 | 752.6 | 10 | 688.5 | 11 | 638.5 | 12 | 593.8 | 13 | 557.0 | 14 | 519.9 | 15 | 492.0 | 16 |
B. Determining the Ideal Gas Constant
Molar calculations:
Mgs+2HClaq→MgCl2aq+H2(g)
5mL of 3M HCl nHCl=0.005L×0.3M1L=0.015mol nHCl 5×excess=0.0155=0.003mol nMg=0.0032=0.0015mol mMg=0.0015×24.31=0.0365g
Volumes: * Tubing:
Inner diameter= 0.53 cm
Length= 46 cm
V=πr2h=π0.265246=10.15mL
* Flask: Measured empirically by filling the flask with water from a measuring cylinder.
Volume=132.85mL
* Total:
10.15+132.85=143mL
Pressure of H2:
PH2=Pfinal-Pinitial-PH2O
PH2=364.2-163.6-16.49
PH2=184.11 torr=0.242atm Pressure vs. Volume Pressure (torr) | Volume (mL) | Temperature (˚C) | 163.6 | | 22.0 | 213.5 | 0.5 | 22.2 | 263.3 | 1.0 | 22.3 | 313.2 | 1.5 | 22.4 | 363.0 | 2.0 | 22.6 | 364.0 | 3.0 | 22.6 | 364.1 | 4.0 | 22.6 | 364.2 | 5.0 | 22.6 |
C. Empirical Relationship of Pressure and Temperature
Procedure: 1) Prepare an empty 100mL flask and enclose it with a rubber stopper. 2) Place the flask in a 200mL beaker half-filled with water. 3) Set up the LabQuest instrument, connecting the pressure and temperature probes. 4) Insert the temperature probe into the water and the pressure probe into the flask through the small hope opening in the rubber stopper. 5) Place the whole apparatus on top of a hot plate and start the LabQuest instrument to start measuring the initial temperature and pressure. 6) Begin to turn up the heat of the hot plate,
Astrella Rosano
Lab Partners: Sam Youngdale, Charlie Stalzer, Ni Xhengzhuan.
TA: Giang Nguyen
Date Submitted: September 28, 2012
Section: Chemistry 1310-L10 Honor Pledge: I did not copy this work from any others student(s), current students in lab, or old lab reports. Signature: ____________________
Raw Data- A. Exploring Pressure-Volume Relationships Pressure (torr) | Volume (mL) | 1384.2 | 5 | 1198.1 | 6 | 1038.1 | 7 | 921.3 | 8 | 826.2 | 9 | 752.6 | 10 | 688.5 | 11 | 638.5 | 12 | 593.8 | 13 | 557.0 | 14 | 519.9 | 15 | 492.0 | 16 |
B. Determining the Ideal Gas Constant
Molar calculations:
Mgs+2HClaq→MgCl2aq+H2(g)
5mL of 3M HCl nHCl=0.005L×0.3M1L=0.015mol nHCl 5×excess=0.0155=0.003mol nMg=0.0032=0.0015mol mMg=0.0015×24.31=0.0365g
Volumes: * Tubing:
Inner diameter= 0.53 cm
Length= 46 cm
V=πr2h=π0.265246=10.15mL
* Flask: Measured empirically by filling the flask with water from a measuring cylinder.
Volume=132.85mL
* Total:
10.15+132.85=143mL
Pressure of H2:
PH2=Pfinal-Pinitial-PH2O
PH2=364.2-163.6-16.49
PH2=184.11 torr=0.242atm Pressure vs. Volume Pressure (torr) | Volume (mL) | Temperature (˚C) | 163.6 | | 22.0 | 213.5 | 0.5 | 22.2 | 263.3 | 1.0 | 22.3 | 313.2 | 1.5 | 22.4 | 363.0 | 2.0 | 22.6 | 364.0 | 3.0 | 22.6 | 364.1 | 4.0 | 22.6 | 364.2 | 5.0 | 22.6 |
C. Empirical Relationship of Pressure and Temperature
Procedure: 1) Prepare an empty 100mL flask and enclose it with a rubber stopper. 2) Place the flask in a 200mL beaker half-filled with water. 3) Set up the LabQuest instrument, connecting the pressure and temperature probes. 4) Insert the temperature probe into the water and the pressure probe into the flask through the small hope opening in the rubber stopper. 5) Place the whole apparatus on top of a hot plate and start the LabQuest instrument to start measuring the initial temperature and pressure. 6) Begin to turn up the heat of the hot plate,
References: 1) Bottomley, Leigh, and Lawrence A. Bottomley. Chemistry 1310: General Chemistry Laboratory Manual. Plymouth, MI: Hayden-McNeil, 2013.