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Question

Match the following

Column - IColumn - II
a) A nearly ideal solutionp) H2O+C2H5OH
b) A solution showing positive deviationq) C6H6+C6H5CH3
c) A solution showing negative deviationr) C6H6+CHCl3
d) An azeotropic mixtures) CH3COCH3 + C2H5OH
t) ΔH and ΔV are positive
u) ΔH and ΔV are negative

A
A- q; B- s, t; C- r, u; D- p
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B
A- s; B- s, t; C- r; D- q, p
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C
A- q; B- s; C- r; D- p, t
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D
A- r; B- p; C- s, t; D- q
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Solution

The correct option is A A- q; B- s, t; C- r, u; D- p
(A) C6H6+C6H5CH3 forms a nearly ideal solution. Both are aromatic hydrocarbons and have similar structure and similar intermolecular forces.
(B) Acetone +C2H5OH forms a solution showing positive deviation. New interactions are weaker than the interactions in pure components. For such solutions, ΔH and ΔV are positive.
(C) C6H6+CHCl3 forms a solution showing negative deviation. New interactions are stronger than the interactions in pure components. For such solutions, Δ H and Δ V are positive.
(D) H2O+C2H5OH forms an azeotropic mixture. It is constant boiling mixture. Two liquids cannot be separated by simple distillation.

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