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प्रश्न
If two liquids A and B form minimum boiling azeotrope at some specific composition then ______.
विकल्प
A–B interactions are stronger than those between A–A or B–B.
vapour pressure of solution increases because more number of molecules of liquids A and B can escape from the solution.
vapour pressure of solution decreases because less number of molecules of only one of the liquids escape from the solution.
A–B interactions are weaker than those between A–A or B–B.
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उत्तर
If two liquids A and B form minimum boiling azeotrope at some specific composition then A–B interactions are weaker than those between A–A or B–B.
Explanation:
The solutions which show large positive deviation from Rault’s law form n = minimum boiling azeotrope at some specific composition. In the case of positive deviation from Rault’s law, A-B interactions are weaker than those between A-A or B-B.
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संबंधित 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 |
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