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Glucose or sucrose are soluble in water ...

Glucose or sucrose are soluble in water but cyclohexane or bezene (simple six membered ring compounds) are insoluble in water. Explain.

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The solubility of a solute in a given solvent follows the rule 'Like dissolves like'. Glucose contains five and sucrose contains eight `-OH` group. These `-OH` groups form H-bonds with water. As a result of this extensive intermoleeular H-bonding, glucose and sucrose are soluble in water. on the other hand, benzene and cyclohexane do not contain `-OH` bonds and hence do not form H-bonds with water. Moreover, they are non-polar molecules and hence do not dissolve in polar water molecules.
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Knowledge Check

  • Which compound is soluble in water

    A
    `CS_(2)`
    B
    `C_(2)H_(5)OH`
    C
    `"CC"l_(4)`
    D
    `CHCl_(3)`
  • Which compound is soluble in water

    A
    `CS_(2)`
    B
    `C_(2)H_(5)OH`
    C
    `C"C"l_(4)`
    D
    `CHCl_(3)`
  • The compound insoluble in water is

    A
    mercurous nitrate
    B
    mercuric nitrate
    C
    mercurous chloride
    D
    mercurous perchlorate
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    6. Why cannot vitamin C be stored in our body ?

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    8. When RNA is hydrolysed, there is no relationship among the quantities ...

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    9. What are monosaccharides?

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    10. What are reducing sugars ?

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    11. Write two main functions of carbohydrates in plants.

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    12. Classify the following into monosaccharides and disaccharides: Ribose,...

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    13. What do you understand by the term glycosidic linkage?

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    14. What is glycogen? How is it different from starch?

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    15. What are the hydrolysis products of (i) sucrose and (ii) lactose?

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    16. What is the basic structural difference between starch and cellulose?

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    17. What happens when D-glucose is treated with the following reagents? ...

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