The following temperature and pressure data were collected for an unknown liquid.
Table: Temperature and Pressure of an Unknown Liquid
Temperature (°C) | Pressure (mmHg) |
---|---|
5 | 50.757 |
10 | 67.952 |
15 | 90.497 |
20 | 119.24 |
25 | 155.04 |
30 | 200.44 |
35 | 256.98 |
40 | 326.87 |
45 | 412.21 |
50 | 518.69 |
55 | 645.60 |
60 | 798.31 |
65 | 977.03 |
70 | 1197.0 |
Using the relationship
ln P = −ΔHvap /R (1/T) + C
graph the data and determine the ΔHvap for
the liquid. (Enter your answer to three significant figures.)
kJ/mol
Ans.
The following temperature and pressure data were collected for an unknown liquid. Table: Temperature and Pressure...
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