Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when

A Only vapor phase follows Raoult's law
B Only liquid phase obeys Dalton's law
C Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law
D Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law

Correct Answer: Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law

Bissoy MCQ
#Chemical Engineering #Mass Transfer

Related Questions

The-relative volatility for separation of a non-ideal binary mixture by distillation should be
A 0
B 1
C > 1
Fugacity of a component in an ideal gas mixture is euqal to the partial pressure of that component in the mixture. The fugacity of each component in a stable homogeneous solution at contant pressure and temperature __________ as its mole fraction increases.
A Decreases
B Decreases exponentially
C Increases
D Remains constant
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A Decreases with increase in
B Increases with increase in
C Is independent of
D None of these
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A Saturated
B Supersaturated
C Superheated
D None of these
A vapor whose partial pressure is less than its equilibrium vapor pressure is called the __________ vapor.
A Saturated
B Superheated
C Unsaturated
D Dry gaseous
The relative volatility of a binary mixture at the azeotropic composition is
A 1
B > 1
C 0
D ∞
For a binary mixture with low relative volatility,
A Use steam distillation
B Use molecular distillation
C Use high pressure distillation
D An azeotrope may be formed during distillation
For a binary mixture with low relative volatility, continuous rectification to get pure products will require
A Low reflux ratio
B Less number of trays
C Small cross-section column
D High reflux ratio
In case of an ideal solution, the total vapor pressure varies __________ with the composition expressed as mole fraction,
A Inversely
B Linearly
C Exponentially
D None of these
For an ideal solution, the total vapor pressure varies __________ with the composition(expressed as mole fraction).
A Inversely
B Exponentially
C Linearly
D Negligibly

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