Which condition is not satisfied by an ideal solution?
1. \(\Delta_{mix} V\) = 0 2. \(\Delta_{mix} S\) = 0
3. Obeyance to Roult's Law 4. \(\Delta_{mix} H\) = 0
Subtopic:  Raoult's Law |
 89%
Level 1: 80%+
NEET - 2013
Hints

Calculate the vapour pressure of a solution prepared by mixing 25.5 g of chloroform (CHCl₃) and 40 g of dichloromethane (CH₂Cl₂) at 25°C.

Given:
Vapour pressure of pure CHCl₃ = 200 mmHg
Vapour pressure of pure CH₂Cl₂ = 415 mmHg
Molar mass of CHCl₃ = 119.5 g mol⁻¹
Molar mass of CH₂Cl₂ = 85 g mol⁻¹

1. 90.40 mm Hg 2. 119.5 mm Hg 
3. 348 mm Hg  4. 173.9 mm Hg 
Subtopic:  Raoult's Law |
Level 4: Below 35%
AIPMT - 2012
Hints

A solution of acetone in ethanol:

1. Shows a negative deviation from Raoult's law
2. Shows a positive deviation from Raoult's law
3. Behaves like a near-ideal solution
4. Obeys Raoult's law
Subtopic:  Raoult's Law |
 78%
Level 2: 60%+
AIPMT - 2006
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