When acetone is added in a two layer mixture of methyl isobutyl ketone and water at 30°C, the acetone distributes between the two layers and the composition of the layer follows two solubility curves. For this system ?

A. As the acetone concentration increases, the solubility curves approach each other
B. Both the phases become identical at a particular common point on both the solubility curves
called the plait point
C. The distribution curve which is a plot between x (acetone concentration in one phase) and y
(acetone concentration in other phase) is analogous to x-y curve used in distillation and
absorption terminates on the x = y diagonal at the concentration of the plait point
D. All A., B. and C.

Related Mcqs:

Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are ?
A. 4
B. 8
C. 9
D. 10
One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult’s law is obeyed, then changing the feed composition would effect ?
A. The product composition but not the fraction vaporised
B. The product composition as well as the fraction vaporised
C. The fraction vaporised but not the product composition
D. Neither the product composition nor the fraction vaporised
1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is________________________?
A. 0.4
B. 0.25
C. 0.2
D. 0.175
The equilibrium liquid composition compared to the vapor composition in case of________________?
Azeotropic mixture is
A. More
B. Less
C. Same
D. Either more or less; depends on the system
An air-water vapour mixture has a dry bulb temperature of 60°C and a dew point temperature of 40°C. The total pressure is 101.3 kPa and the vapour pressure of water at 40°C and 60°C are 7.30 kPa and 19.91 kPa respectively. The humidity of air sample expressed as kg of water vapour/kg of dry air is__________________?
A. 0.048
B. 0.079
C. 0.122
D. 0.152
The relative volatility of a binary mixture at the Azeotropic composition is _______________________?
A. 1
B. > 1
C. 0
D. ∞
In Azeotropic mixture, the equilibrium vapour composition is____________________?
A. More than liquid composition
B. Less than liquid composition
C. Same as liquid composition
D. Independent of pressure
The dew point of an unsaturated gas-vapor mixture does not depend upon the _________________ of the mixture?
A. Composition
B. Temperature
C. Total pressure
D. All A, B. and C.
The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?
A. Reducing the total pressure
B. Increasing the total pressure
C. Reducing the temperature
D. Both B. and C.
A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture ?
A. The mixture exhibits an azeotrope at 101.3 kPa
B. The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and mxylene
10
C. The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10
D. The mixture contain optical isomers