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Answer the questions (given below) which...

Answer the questions (given below) which are based on the following diagram. Vapour pressure plots of benzene-toluence mixture at `20^(@)C`. Solution of benzene and toluence are ideal. Raoult's law is valid for both components over the entrie range of concentration.

An ideal solution consisting of two components A and B (such as benzene and toluence) is one in whic:

A

the intermolecular attraction A...A, B...B and A...B are equal

B

`DeltaH_(mix) = 0, DeltaV_(mix) = 0`

C

both of the above conditions are followed

D

none of the above conditions are followed

Text Solution

Verified by Experts

The correct Answer is:
C
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An ideal solution follows Raoult's law over all ranges of concentrations and pressure.

Consider the following partially labelled figure (graph is upto scale) for an ideal binary solution of benzene and toluence and answer the following questions.

Knowledge Check

  • Answer the questions (given below) which are based on the following diagram. Vapour pressure plots of benzene-toluence mixture at 20^(@)C . Solution of benzene and toluence are ideal. Raoult's law is valid for both components over the entrie range of concentration. There is deviation from ideal behaviour if mixture contains:

    A
    n-hexane and n-heptane
    B
    chlorobenzene and bromobenzene
    C
    o-xylene and p-xylene
    D
    acetone and chloroform

  • 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)):}`

  • Consider the following partially labelled figure (graph is upto scale) for an ideal binary solution of benzene and toluence and answer the following questions. Which graph corresponds to benzene ?

    A
    1
    B
    2
    C
    3
    D
    Any of 1 or 2

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