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Q.

Which of the following is correct for a solution showing positive deviations from Raoult's law?

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a

$ΔV = + ve, ΔH = + ve$

b

$ΔV = - ve, ΔH = - ve$

c

$ΔV = + ve, ΔH = - ve$

d

$ΔV = - ve, ΔH = + ve$

answer is A.

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Detailed Solution

$Δ H_{m i x} > 0,$ endothermic dissolution, heat is absorbed.

$Δ V_{m i x} > 0,$ volume increased after dissolution

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Which of the following is correct for a solution showing positive deviations from Raoult's law?