Statement-1 : Acetone + Carbon disulphide solution shows positive deviation from Raoult’s lawStatement-2 : Acetone + Aniline solution shows positive deviation from Raoult’s law
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a
Both statement-1 and statement-2- are correct
b
both statement-1 and statement-2- are wrong
c
Statement-1 is correct and statement-2 is wrong
d
Statement-1 is wrong and statement-2 is correct
answer is C.
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Detailed Solution
(I) Let A=Acetone ; B=CS2A-A ...... dipole- dipole forcesB-B ...... London dispersive forces'B' molecules disturbs the dipole- dipole attractions between' A' moleculesThus A-B interactions are weaker than in A-A & B-B V.P is higher than that expected And the mixture shows positive deviation from Raoult's law (I) is True(II) Let A=Aniline ; B= AcetoneA-A .... inter molecular H-bonded forcesB-B .... dipole- dipole attractionsStrong inter molecular H-bonded forces are present between A & B moleculesThus A-B interactions are stronger than A-A & B-B interactions V.P is lesser than that expected And the mixture shows negative deviation from Raoult's law(II) is false