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Why can't rectified spirit be converted ...

Why can't rectified spirit be converted into absolute alcohol by simple distillation ?

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Rectified spirit containing 95% ethyl alcohol and 5% water forms an azeotropic mixture which distils at a constnt temperature of 351.13 K.
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Assertion : Compounds with difference in their boiling points by about 30^(@)C can be separated by simple distillation. Reason : All liquid mixtures can be separated by distillation method.

When rectified spirit and benzene are distilled togther, the first fraction obtained is

Calculate the mole fraction of rectified spirit (95% ethyl alcohol by mass).

Assertion (A). Simple distillation can help in separating a mixture of propan -1-ol (boiling point 97^(@)C ) and propanone (boiling point 56^(@)C ) Reason (R). Liquids with a difference of more than 20^(@)C in their boiling points can be separated by simple distillation.

ICSE-ALCOHOLS, PHENOLS AND ETHERS -EXERCISE (PART-II Descriptive Questions) (VERY SHORT ANSWER QUESTIONS)
  1. What is methylated spirit or denatured alcohol?

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  2. What is 'Power alcohol'?

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  3. Why can't rectified spirit be converted into absolute alcohol by simp...

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  4. Name any two reagents used for bringing about the oxidation of alcoho...

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  5. What is the main product obtained when vapours of tert.-butyl alcohol...

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  6. Why boiling points of phenols are higher than those of the correspond...

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  7. Give one reaction to show that phenol is acidic in character.

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  8. Name the phenol with molecular formula C(7)H(8)O which on treatment w...

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  9. Phenol is an acid but does not react with sodium bicarbonate solution...

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  10. Name the major product formed when sodium phenoxide is heated with CO...

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  11. Phenol is heated with chloroform and NaOH at 340 K. What is the produ...

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  12. How many sigma bonds are present in 3-methylphenol.

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  13. What is an enzyme ? Name two enzymes used in the preparation of alcoh...

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  14. Answer the following questions : What is fermentation ?

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  15. Mention an industrial product manufactured from methanol.

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  16. Mention two important uses of methanol.

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  17. Give the structural formula and name of the product of following react...

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  18. How is phenol obtained from aniline ?

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  19. How is phenolphthalein obtained?

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  20. Arrange water, ethanol and phenol in increasing order of acidity and g...

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