MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Physical ChemistrySolutionsOsmotic pressure in colligative properties
Among 0.1 M solutions of urea, Na₃PO₄ and Al₂ (SO₄)₃, which is incorrect
A.the vapour pressure and freezing point are the✓ Correct
B.the vapour pressure and freezing point are the
C.the boiling point is the highest for Al₂(SO₄)₃
D.the depression in freezing point is the highest
Explanation
No. of ions furnished in urea 0.1 1 0.1 x>> No. of ions furnished in 0.1 3 0.3 x>> No. of ions furnished in 2 4 3 0.1 5 0.5 x >> Al SO SOLUTIONS 51 From this it is clear that 2 4 3 Al SO will have maximum , b f T T and relative lowering of vapour pressure. Urea will have minimum fT , but Tf will be maximum for urea as 0 f f f T T T
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