Advertisements
Advertisements
प्रश्न
Vapour pressure of pure acetone and chloroform at 328 K are 741.8 mm Hg and 632.8 mm Hg respectively. Assuming that they form ideal solution over the entire range of composition, plot `p_"total"`, `p_"chloroform"` and `p_"acetone"` as a function of `chi_"acetone"`. The experimental data observed for different compositions of mixtures is:
| `bb(100 xx chi_"acetone")` | `bb(P_"acetone"//"mm Hg")` | `bb(p_"chloroform"//"mm Hg")` |
| 0 | 0 | 632.8 |
| 11.8 | 54.9 | 548.1 |
| 23.4 | 110.1 | 469.4 |
| 36 | 202.4 | 359.7 |
| 50.8 | 322.7 | 257.7 |
| 58.2 | 405.9 | 193.6 |
| 64.5 | 454.1 | 161.2 |
| 72.1 | 521.1 | 120.7 |
Plot this data also on the same graph paper. Indicate whether it has a positive or negative deviation from the ideal solution.
Advertisements
उत्तर
| `bb(100 xx chi_"acetone")` | `bb(P_"acetone"//"mm Hg")` | `bb(p_"chloroform"//"mm Hg")` | `bb("P"_"total" ("mm Hg"))` |
| 0 | 0 | 632.8 | 632.8 |
| 11.8 | 54.9 | 548.1 | 603.0 |
| 23.4 | 110.1 | 469.4 | 579.5 |
| 36 | 202.4 | 359.7 | 562.1 |
| 50.8 | 322.7 | 257.7 | 580.4 |
| 58.2 | 405.9 | 193.6 | 595.5 |
| 64.5 | 454.1 | 161.2 | 615.3 |
| 72.1 | 521.1 | 120.7 | 641.8 |
It can be observed from the graph that the plot for the ptotal of the solution curves downward. Therefore, the solution shows a negative deviation from the ideal behaviour.
संबंधित प्रश्न
Heptane and octane form an ideal solution. At 373 K, the vapour pressures of the two liquid components are 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?
Suggest the most important type of intermolecular attractive interaction in the following pair.
acetonitrile (CH3CN) and acetone (C3H6O)
Define an ideal solution and write one of its characteristics.
What type of intermolecular attractive interaction exists in the pair of methanol and acetone?
The KH for the solution of oxygen dissolved in water is 4 × 104 atm at a given temperature. If the partial pressure of oxygen in air is 0.4 atm, the mole fraction of oxygen in solution is ______.
The mass of a non – volatile solute (molar mass 80 g mol-1) should be dissolved in 92g of toluene to reduce its vapour pressure to 90% ______.
State Raoult law and obtain the expression for lowering of vapour pressure when the nonvolatile solute is dissolved Insolvent.
Which solution has the lower freezing point? 10 g of methanol (CH3OH) in 100g g of water (or) 20 g of ethanol (C2H5OH) in 200 g of water.
For ideal solution the enthalpy of mixing of the pure components to form the solution is ____________.
For ideal solution the volume of mixing of the pure components to form the solution is ____________.
Intermolecular forces between two benzene molecules are nearly of same strength as those between two toluene molecules. For a mixture of benzene and toluene, which of the following are not true?
(i) ∆mix H = zero
(ii) ∆mix V = zero
(iii) These will form minimum boiling azeotrope.
(iv) These will not form ideal solution.
Why soda water bottle kept at room temperature fizzes on opening?
Explain the terms ideal and non-ideal solutions in the light of forces of interactions operating between molecules in liquid solutions.
The pH of a solution of hydrochloric acid is 1.5. Calculate the concentration of the acid.
Lowering of vapour pressure of an aqueous solution of a non-volatile, non-electrolyte 1 molal aqueous solution at 100°C is ______.
If liquids A and B form an ideal solution, the ______.
Suggest the most important type of intermolecular attractive interaction in the following pair.
NaClO4 and water
Suggest the most important type of intermolecular attractive interaction in the following pair.
Methanol and acetone
