5
Question
Name the functional groups present in the following compounds: [5 Marks]
1. CH3−CH2−CH2−OH
2. CH3−CH2−CH2−COOH
3. CH3−CH2−CHO
4. CH3−CO−CH2−CH3
5. CH3−CH2−CO-OH
Name the functional groups present in the following compounds: [5 Marks]
1. CH3−CH2−CH2−OH
2. CH3−CH2−CH2−COOH
3. CH3−CH2−CHO
4. CH3−CO−CH2−CH3
5. CH3−CH2−CO-OH
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Solution
The functional groups present in the following compounds are as follows:-
- CH3−CH2−CH2−OH
Since –OH group is present at the terminal carbon atom, it is an alcohol. [1 Mark]
- CH3−CH2−CH2−COOH
Since –COOH group is present at the terminal carbon atom, it is a carboxylic acid. [1 Mark]
- CH3−CH2−CHO
Since –CHO group is present at the terminal carbon atom, it is an aldehyde. [1 Mark]
- CH3−CO-CH2−CH3
Since –CO (carbonyl) group is present and it is of the form R-CO-R', it is a ketone. [1 Mark]
- CH3−CH2−CO-OH
Since -CO-OH is –COOH group and is present at the terminal carbon atom, it is a carboxylic acid. [1 Mark]
- CH3−CH2−CH2−OH
Since –OH group is present at the terminal carbon atom, it is an alcohol. [1 Mark] - CH3−CH2−CH2−COOH
Since –COOH group is present at the terminal carbon atom, it is a carboxylic acid. [1 Mark] - CH3−CH2−CHO
Since –CHO group is present at the terminal carbon atom, it is an aldehyde. [1 Mark] - CH3−CO-CH2−CH3
Since –CO (carbonyl) group is present and it is of the form R-CO-R', it is a ketone. [1 Mark] - CH3−CH2−CO-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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