LAB REPORT No 4
NAME_______________________________ DATE________________
Experiment #
1
. Boyle’s Law: Pressure-Volume Relationship in Gases.
|
Volume |
mmHg reading on the sensor X |
Pressure of the air in mmHg = 76 0 mmHg + X |
Pressure of the air atm |
1/Volume |
|
60 mL |
0 |
760 |
1 |
0.0167 |
|
58 mL |
0.0172 |
|||
|
56 mL |
0.0179 |
|||
|
54 mL |
0.0185 |
|||
|
52 mL |
0.0192 |
|||
|
50 mL |
0.0200 |
|||
|
48 mL |
0.0208 |
1. Represent the relationship between the pressure and the volume on a graph, (Volume is being plotted along the x-axis and Pressure is being plotted along the y-axis).
2. Represent the relationship between the pressure and the inverse of the volume on a graph, (1/V is being plotted along the x-axis and Pressure is being plotted along the y-axis).
3. According to the graphs, what is the relationship between the pressure and the volume of the gas at constant temperature?
Graph of Pressure versus Volume
Graph of Pressure versus 1/Volume
Experiment # 2. Charles’s Law: Temperature-Volume Relationship in Gases
Trial 1
Trial 2
Temperature of boiling water T1 (0C)
Temperature of boiling water T1 (K)
Temperature of cooling water T2 (0C)
Temperature of cooling water T2 (K)
Volume of air in flask at higth Temperature (mL) V1
Volume of water in the flask at lower temperature (mL) Vw
Volume of air in flask at lower Temperature (mL) V2
V1 – Vw = V2 (experimental)
1.Determine the accuracy of the experimental determination of the volume (V2 in the data table) by calculating that volume using Charles’ Law.
V1/T1 = V2/T2 V2 = (V1/T1) x T2
Your calculations:
2. Assuming the calculated volume to be correct, calculate the percentage of error in the experiment: [(V2 experimental – V2 calculated) / V2 calculated] x 100 = % error
|
V2 (experimental) |
|
V2 (calculated using Charles’ Law) |
|
[V2 experimental – V2 calculated] |
|
% error |
What experimental factors are assumed to be constant in Charles’ Law experiment?
