Published by:
CGP EDU Academic Team
Published on: August 14, 2026
The vapor pressures of chlorobenzene and water at different temperatures are
t/°C | 90 | 100 | 110 |
P°(φCl)/ mm Hg | 204 | 289 | 402 |
P°(H2O)/mmHg | 526 | 760 | 1075 |
At what temperature will φ Cl steam-distillation under a total pressure of 800 mmHg?
A
95ºC
B
92ºC
C
94ºC
D
89ºC
Text Solution
Verified by ExpertsThe correct answer is:
A
At 90ºC, Total P T = 730 mm Hg
At 100ºC total P T = 289 + 760 = 1049 mm Hg
so for 800 mm Hg, temperature will lie in between 90º –100ºC
Using extrapolation method, Temperature = 90 + 
× (100 – 90) = 92.19ºC.
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