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Question

Name the functional groups present in the following compounds: [5 Marks]

1. CH3CH2CH2OH
2. CH3CH2CH2COOH
3. CH3CH2CHO
4. CH3COCH2CH3
5. CH3CH2CO-OH


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Solution

The functional groups present in the following compounds are as follows:-
  • CH3CH2CH2OH
    Since –OH group is present at the terminal carbon atom, it is an alcohol. [1 Mark]
  • CH3CH2CH2COOH
    Since –COOH group is present at the terminal carbon atom, it is a carboxylic acid. [1 Mark]
  • CH3CH2CHO
    Since –CHO group is present at the terminal carbon atom, it is an aldehyde. [1 Mark]
  • CH3CO-CH2CH3
    Since –CO (carbonyl) group is present and it is of the form R-CO-R', it is a ketone. [1 Mark]
  • CH3CH2CO-OH
    Since -CO-OH is –COOH group and is present at the terminal carbon atom, it is a carboxylic acid. [1 Mark]

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