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Answer the questions (given below) which...

Answer the questions (given below) which are based on the following diagram: vapour pessure diagram for real solution of two liquids A and B that exhibit a negative deviation from Raoult's law. The vapour pressure of both A and B are less than predicted by Raoult's law. The dashed lines represent the plots for ideal solutions.

Solution containing components A and B show this type of deviation from ideal behaviour when:

A

`{:("Attraction" A...B,DeltaH_("mix"),DeltaV_("mix"),B.P),("Larger than average of" A...A .B..B"attraction",+ve,+ve,"larger than expected"):}`

B

`{:("Attraction" A...B,DeltaH_("mix"),DeltaV_("mix"),B.P),("As in" (a),-ve,-ve,"As in" (a)):}`

C

`{:("Attraction" A...B,DeltaH_("mix"),DeltaV_("mix"),B.P),("Smaller than average of" A...A..B..B "attraction",+ve,+ve,"Smaller than expected"):}`

D

`{:("Attraction" A...B,DeltaH_("mix"),DeltaV_("mix"),B.P),("As in"(c),-ve,-ve,"As in"(c)):}`

Text Solution

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The correct Answer is:
B
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Knowledge Check

  • Answer the question (given below) which are based on the following diagra. Consider some facts about the above phase diagram : Vapour pressure diagram for real solutions of two liquids A and B that exhibit a positive deviation from Raoult's law. The vapour pressure of both A and B are greater than predicted by Raoult's law. The dashed lines lines represented the plots for ideal solutions. Total vapour pressure of mixture of 1 mol of volatile component A(P_(A)^(@)=100 mmHg) and 3 mol of volatile component B(P_(B)^(@)=60 mmHg) is 75 mm . For such case:

    A
    There is positive deviation from Raoult's law
    B
    Boiling point has been lowered
    C
    Force of attraction between `A` and `B` is smaller than that between `A` and `A` or between `B` and `B`.
    D
    All the above statements are correct.

  • Answer the questions (given below) which are based on the following diagram ? Consider some facts about the above phase diagram. Vapour pressure diagram for real solutions of two liquids A and B that exhibit a positive deviation from Raoult's law. The vapour presssure of both A and B are greater than predicted by Raoult's law. The dashed lines represented the plots for ideal solutions. A : This is obserbed when A...B attractions are greater than average of A...B and B.....B attraction : B : DeltaH_(mix) = +ve, DeltaV_(mix) = +ve C : Boiling point is smaller than expected such that vaporisation is increased D : Mixture can from azeotropic mixture Select correct facts.

    A
    A,B,C
    B
    B,C,D
    C
    A,C,D
    D
    A,B,C,D

  • Answer the question (given below) which are based on the following diagra. Consider some facts about the above phase diagram : Vapour pressure diagram for real solutions of two liquids A and B that exhibit a positive deviation from Raoult's law. The vapour pressure of both A and B are greater than predicted by Raoult's law. The dashed lines lines represented the plots for ideal solutions. A : This is observed when A...B attraction are greater than average of A...B and B...B attraction: B : DeltaH_("mix")=+ve,DeltaV_("mix")=+ve C : Boiling point is smaller than expected such that vaporisation is increased D : Mixture is called azeotropic mixture Select correct facts

    A
    A,B,C
    B
    B,C,D
    C
    A,C,D
    D
    A,B,C,D

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