Vapour pressures of pure acetone and chloroform at 328 k are 741.8 nm Hg and 632.8 mm Hg respectively. Assuming that they form ideal solution over the entire range of composition, plot Ptotal , Pchlroform and Pacelone as a function of Xactone. The experimental date observed for different composition of mixture is:
100 x xacetone |
0 |
11.8 |
23.8 |
36.0 |
50.8 |
58.2 |
64.5 |
72.1 |
Pacetone / mm Hg
|
0 |
54.9 |
110.1 |
202.4 |
327.7 |
405.9 |
454.1 |
521.1 |
Pchloroform/ mm Hg |
632.8 |
548.1 |
469.4 |
359.7 |
257.7 |
193.6 |
161.2 |
120.7 |
Plot this data also on the same graph paper, indicate whether it has positive deviation or negative deviation from the ideal solution.
Answer:
Henry’s law states that the solubility of a gas in a liquid is directly proportional to pressure of the gas keeping temperature constant.
Mathematically, P = KH x
x mole fraction of gas in solution
P is partial pressure of gas,
KH is Henry's constant.
Applications: Henry's law finds various applications in industry and enables us to explain and understand some biological phenomena. The some of important applications are: CO2 solubility in soft drinks, beverages, soda water etc. is increased by applying high pressure and bottles are sealed under high pressure.