Write two difference between a solution showing positive deviation and a solution showing negative deviation from Raoult's law.

Open in App

Solution

Solutions showing positive deviation Solutions showing negative deviation
from Raoult's law from Raoult's law

(i) $P_{A} > P_{A}^{0} X_{A}$ and $P_{B} > P_{B}^{0} X_{B}$ (i) $P_{A} < P_{A}^{0} X_{A}$ and $P_{B} > P_{B}^{0} X_{B}$

(ii) $Δ_{m i x} H > 0, Δ_{m i x} V > 0$ (ii) $Δ_{m i x} H < 0, Δ_{m i x} V < 0$

(iii) Form minimum boiling azeotropes (iii) Form maximum boiling azeotropes

Suggest Corrections

Similar questions

Q. A solution of

C H C l_{3} + C H_{3} C O C H_{3}

shows negative deviation from Raoults law.

Q. For a solution showing positive deviation from raoult's law:

The vapour pressure of the solution of two liquids $A (p^{\circ} = 80 m m)$ and $B (p^{\circ} = 120 m m)$ is found to be 100 mm when $X_{A}$ = 0.4. The result shows that

Q. Assertion :Acetone-Carbon disulphide solution shows positive deviation from Raoult's law. Reason: Acetone

+

Aniline solution shows positive deviation from Raoult's law.

Which of the following liquid pairs shows a positive deviation from Raoults law?

Join BYJU'S Learning Program

Write two difference between a solution showing positive deviation and a solution showing negative deviation from Raoult's law.

Solutions showing positive deviation Solutions showing negative deviation from Raoult's law from Raoult's law(i) PA>P0AXA and PB>P0BXB (i) PA<P0AXA and PB>P0BXB (ii) ΔmixH>0,ΔmixV>0 (ii) ΔmixH<0,ΔmixV<0 (iii) Form minimum boiling azeotropes (iii) Form maximum boiling azeotropes