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प्रश्न
Assertion: Molarity of a solution in liquid state changes with temperature.
Reason: The volume of a solution changes with change in temperature.
विकल्प
Assertion and reason both are correct statements and reason is correct explanation for assertion.
Assertion and reason both are correct statements but reason is not correct explanation for assertion.
Assertion is correct statement but reason is wrong statement.
Assertion and reason both are incorrect statements.
Assertion is wrong statement but reason is correct statement.
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उत्तर
Assertion and reason both are correct statements and reason is correct explanation for assertion.
Explanation:
(i) Strength of a solution in terms of 'Molarity (M)' is represents the number of moles of the solute dissolved per litre pf solution, i.e.
Morality = `"No. of moles of solute component"/"Volume of solution in litres"`
(ii) Since volume of a liquid varies with changes of temperatures, the volume of solution would also change while the number of moles of solute present in it will remain the same (or unchanged). This, therefore, would affect the molarity of the solution.
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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 Ptotal, `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 |
| 36.0 | 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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