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An aqueous solution of 2 % (w\w) non-volatile solute exerts a pressure of 1.004 bar at the normal boiling point of the solvent. Molar mass of the solute would be:
| 1. | 23.69 g mol–1 | 2. | 41.35 g mol–1 |
| 3. | 56.23 g mol–1 | 4. | 22.76 g mol–1 |
Subtopic: Dalton’s Law of Partial Pressure |
57%
Level 3: 35%-60%
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The vapour pressure of pure benzene and toluene are 160 and 60 torr respectively. The mole fraction of toluene in vapour phase in contact with an equimolar solution of benzene and toluene is -
| 1. | 0.50 | 2. | 0.6 |
| 3. | 0.27 | 4. | 0.73 |
Subtopic: Dalton’s Law of Partial Pressure |
64%
Level 2: 60%+
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If partial pressure of oxygen is 0.5 atm and KH = 1.4 × 10-3 M/atm, then the amount of oxygen dissolved in 100 ml water at 298K is-
| 1. | 22.4 mg | 2. | 22.4 g |
| 3. | 2.24 g | 4. | 2.24 mg |
Subtopic: Dalton’s Law of Partial Pressure |
Level 3: 35%-60%
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