10th Class Science Solved Paper - Science-2017 Outside Delhi Set-II

  • question_answer
    Explain esterification reaction with the help of a chemical equation. Describe an activity to show esterification.

    Answer:

    The reaction of carboxylic acid with alcohol forms an ester. This process of formation of ester is called esterification.
    \[C{{H}_{3}}COOH+C{{H}_{3}}C{{H}_{2}}OH\to C{{H}_{3}}COOC{{H}_{2}}C{{H}_{3}}+{{H}_{2}}O\]
    Activity:
    (i) Take 1 ml of ethanol and 1 ml of glacial acetic acid in a boiling tube and mix the contents well.
    (ii) Add few drops of cone. \[{{H}_{2}}S{{O}_{4}}\] to it.
    (iii) Warm the contents on a water bath for a few minutes.
    (iv) Now pour the solution in a beaker containing 20-50 ml of water.
    (v) A sweet fruity smell indicating formation of an ester is observed.
     


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