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Azeotropic mixtures are...

Azeotropic mixtures are

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Mixtures of liquids which boil at constant temperature like a pure liquid such that the distillate has the same composition as that of liquid mixture are called constant boiling mixtures or azeotropic mixtures or simply azeotropes.
Example. Ethyl alcohol-water solution having 95.4% alcohol.
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Compreshension-II In non-ideal solutions, at one of the intermediate compostions, the total vapour pressure is highest and the boiling point is lowest. At this point, the composition of the liquid and vapour phase is same. So, if liquid mixture vapouriese at this point and vapours are condensed, the condensate contains same compositon as present in original liquid mixture. it means at this point liquid behaves like a pure liquid and is called an Azeotropic mixture. A and B forms non-ideal solution showing positive deviation. Boiling point of pure A and B is 350 K and 380 K respectively. The solution will bpoil at (approximate)

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ICSE-SOLUTIONS-EXERCISE (PART-II Descriptive Questions) (VERY SHORT ANSWER QUESTIONS)
  1. What is a ternary solution?

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  2. Give the names of any two methods which are used to determine the vapo...

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  3. Azeotropic mixtures are

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  4. What are minimum boiling azeotropes? Give one example.

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  5. What are maximum boiling azetropes? Give one example.

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  6. Give an example of nearly ideal solution.

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  7. Why is boiling point of a solvent elevated upon the addition of a non...

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  8. Why is freezing point depressed when a non-volatile solute is added t...

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  9. What is an antifreeze?

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  10. Define molal elevation constant or ebullioscopic constant.

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  11. Define cryoscopic constant.

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  12. Why is osmotic pressure considered as colligative property?

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  13. What are isotonic solutions ?

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  14. Hypotonic and Hypertonic solution

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  15. Why NaCl solution freezes at lower temperature than water but boils a...

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  16. Why does molality of a solution remains unchanged with change in temp...

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  17. Why is the cooking temperature in pressure cooker higher than that in...

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  18. Solution A is obtained by dissolving 1 g of urea in 100 g of water an...

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  19. Which of the following solutions shows positive deviation from Raoult'...

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  20. When is the value of van't Hoff factor more than one?

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