Volume vs. Pressure experiment

Volume vs. Pressure experiment

1)    Tables

Volume (mL)	Pressure (hPa)
65	0
64	20
63	40
62	50
61	70
60	85
59	110
58	140
57	150
56	170
55	200
54	225
53	250
52	275
51	300
50	330
49	350
48	375
47	420
46	450
45	490
44	510
43	550
42	590
41	625
40	675
39	710
38	770
37	830
36	855
35	900
34	955
33	1000
32	1010
31	1150
30	1220
29	1285
28	1425
27	1500
26	1560
25	1720
24	1750
23	1930
22	2030
21	2160
20	2325

Volume (mL)	Pressure (hPa)
0.02	0.00
0.02	20.00
0.02	40.00
0.02	50.00
0.02	70.00
0.02	85.00
0.02	110.00
0.02	140.00
0.02	150.00
0.02	170.00
0.02	200.00
0.02	225.00
0.02	250.00
0.02	275.00
0.02	300.00
0.02	330.00
0.02	350.00
0.02	375.00
0.02	420.00
0.02	450.00
0.02	490.00
0.02	510.00
0.02	550.00
0.02	590.00
0.02	625.00
0.02	675.00
0.02	710.00
0.02	770.00
0.02	830.00
0.02	855.00
0.02	900.00
0.02	955.00
0.02	1000.00
0.02	1010.00
0.02	1150.00
0.02	1220.00
0.02	1285.00
0.02	1425.00
0.02	1500.00
0.02	1560.00
0.03	1720.00
0.03	1750.00
0.03	1930.00
0.03	2030.00
0.03	2160.00
0.03	2325.00

2) Graphs

3) Conclusion

While it’s true that our trend lines don’t really make sense in the context of the problem; one of them is a polynomial, we can agree that we can obtain some valuable conclusions by looking at our graphs. The first one somewhat shows us an exponential function and although, the second one does too, we can assume that our data points aren’t extremely reliable and that this function could be considered linear, hence the linear trend line. 

In other words, we see that as the volume increases, the pressure of the gas-air decreases proportionally. In fact, volume and pressure are inversely proportional.

This leads us to Boyle’s law, which says:

This equation proves the exact same theory as the conclusion above.