NEETChemistryGeneral Organic Chemistry
What is the condition for a substance to boil in steam distillation?
Options
- AIts vapor pressure should be equal to the atmospheric pressure.
- BIts vapor pressure should be lower than the atmospheric pressure.
- CIts vapor pressure should be higher than the atmospheric pressure.
- DIts vapor pressure should be zero.
Correct answer
A. Its vapor pressure should be equal to the atmospheric pressure.
Step-by-step solution
In steam distillation, a substance boils when the sum of vapor pressures due to the organic liquid and that due to water becomes equal to the atmospheric pressure.