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A solution containing 30 g of non-volatile solute in 90 g of water has a vapour pressure of 2.8 kPa at 298 K. Further, 18 g of water is then added to the solution and the new vapour pressure becomes 2.9 kPa at 298 K.
The molar mass of the solute will be :
1. 23 g mol−1
2. 34 g mol−1
3. 15 g mol−1
4. 46 g mol−1
Subtopic: Relative Lowering of Vapour Pressure |
Level 3: 35%-60%
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An open beaker of water in equilibrium with water vapour is in a sealed container.
When a few grams of glucose are added to the beaker of water,
the rate at which water molecules :
When a few grams of glucose are added to the beaker of water,
the rate at which water molecules :
| 1. | Leaves the vapour increases |
| 2. | Leaves the solution increases |
| 3. | Leaves the solution decreases |
| 4. | Leaves the vapour decreases |
Subtopic: Relative Lowering of Vapour Pressure |
Level 4: Below 35%
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