Which of the following pairs will form an ideal solution?
1. Chloroform and Acetone
2. Ethanol and Acetone
3. n-Hexane and n-Heptane
4. Phenol and Aniline
| 1. | \(\Delta_{mix} V\) = 0 | 2. | \(\Delta_{mix} S\) = 0 |
| 3. | Obeyance to Roult's Law | 4. | \(\Delta_{mix} H\) = 0 |
| 1. | 502 mm | 2. | 248 mm |
| 3. | 600 mm | 4. | 298 mm |
The ideal solution indicates:
| 1. | A – B attraction force is greater than A – A and B – B. |
| 2. | A – B attraction force is less than A – A and B – B. |
| 3. | Attraction force remains the same in A – A and B – B. |
| 4. | The volume of the solution is different from the sum of the volume of the solute and solvent. |
| 1. | The lowering of vapour pressure is equal to the mole fraction of the solute. |
| 2. | The relative lowering of vapour pressure is equal to the mole fraction of the solute. |
| 3. | The relative lowering of vapour pressure is proportional to the amount of solute in solution. |
| 4. | The vapour pressure of the solution is equal to the mole fraction of the solvent. |
Which one of the following is incorrect for an ideal solution?
1. Hmix = 0
2. Umix = 0
3. \(\Delta \mathrm{P}=\mathrm{P}_{\text {observed }}-\mathrm{P} _\text { Calculated by raoults law }=0\)
4. Gmix = 0
A mixture contains 1 mole of volatile liquid A \(\left(\right. P_{A}^{\circ} = 100\ mm\ Hg \left.\right)\) and 3 moles of volatile liquid B \(\left(\right. P_{B}^{0} = 80\ mm\ Hg \left.\right)\). If solution behaves ideally, the total vapour pressure of the distillate is:
1. 85 mm Hg
2. 95 mm Hg
3. 90 mm Hg
4. 92 mm Hg