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Answer the question (given below) which ...

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

Text Solution

Verified by Experts

The correct Answer is:
B
B,C and D are the conditions and facts for positives deviation from Raoult's law.
(A) is incorrect.
Because `A-B` attractive force should be weaker than `A-A` and `B-B` attractive forces.
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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.

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:

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:

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Knowledge Check

  • 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 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)):}`

  • 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.