English
Karnataka Board PUCPUC Science 2nd PUC Class 12

In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?

Advertisements
Advertisements

Question

In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?

Advertisements

Solution

It shows negative deviation from Raoult’s law.

shaalaa.com
  Is there an error in this question or solution?
2015-2016 (March) All India Set 2 C

RELATED QUESTIONS

What is meant by positive deviations from Raoult's law? Give an example. What is the sign of ∆mixH for positive deviation?


Define azeotropes. 


Vapour pressure of pure water at 298 K is 23.8 mm Hg. 50 g of urea (NH2CONH2) is dissolved in 850 g of water. Calculate the vapour pressure of water for this solution and its relative lowering.


A solution containing 30 g of non-volatile solute exactly in 90 g of water has a vapour pressure of 2.8 kPa at 298 K. Further, 18 g of water is then added to the solution and the new vapour pressure becomes 2.9 kPa at 298 K. Calculate:

  1. molar mass of the solute.
  2. vapour pressure of water at 298 K.

What type of azeotrope is formed by positive deviation from Raoult’s law?


Some liquids on mixing form 'azeotropes'. What are 'azeotropes'?


Define Raoult’s law for the elevation of the boiling point of a solution.


Raoult’s law states that for a solution of volatile liquids the partial pressure of each component in the solution is ____________.


At equilibrium the rate of dissolution of a solid solute in a volatile liquid solvent is ______.


An aqueous solution of hydrochloric acid:


Considering the formation, breaking and strength of hydrogen bond, predict which of the following mixtures will show a positive deviation from Raoult’s law?


On the basis of information given below mark the correct option.

(A) In bromoethane and chloroethane mixture intermolecular interactions of A–A and B–B type are nearly same as A–B type interactions.

(B) In ethanol and acetone mixture A–A or B–B type intermolecular interactions are stronger than A–B type interactions.

(C) In chloroform and acetone mixture A–A or B–B type intermolecular interactions are weaker than A–B type interactions.


On the basis of information given below mark the correct option.
On adding acetone to methanol some of the hydrogen bonds between methanol molecules break.


Using Raoult’s law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions.

\[\ce{NaCl(s) and H2O(l)}\]


A solution of a non-volatile solute in water freezes at −0.30°C. The vapour pressure of pure water at 298 K is 23.51 mm Hg and Kf for water is 1.86 degree/mol. The vapour pressure of rain solution at 298 K is ______ mm Hg.


An azeotropic mixture of two liquids will have a boiling point lower than either of the two liquids when it ______.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×