Certainly! Let's examine each molecule one by one and identify the functional group present in each.
### (a) [tex]\( CH_3NH_2 \)[/tex]
- This molecule is known as Methylamine.
- The structural formula includes a methyl group ([tex]\( CH_3 \)[/tex]) attached to an amine group ([tex]\( NH_2 \)[/tex]).
- The functional group here is the Amino group because of the presence of the [tex]\( NH_2 \)[/tex] group.
Functional group: Amino
### (b)
- No molecule is provided in this case.
- Therefore, it’s not possible to identify any functional group without additional information.
Functional group: None
### (c) [tex]\( CH_3CH_2OH \)[/tex]
- This molecule is known as Ethanol.
- The structural formula includes an ethyl group ([tex]\( CH_3CH_2 \)[/tex]) attached to a hydroxyl group ([tex]\( OH \)[/tex]).
- The functional group here is the Hydroxyl group because of the presence of the [tex]\( OH \)[/tex] group.
Functional group: Hydroxyl
### (d) [tex]\( CH_2=CHCH_3 \)[/tex]
- This molecule is known as Propene.
- The structural formula includes a carbon double bond ([tex]\( = \)[/tex]).
- The functional group here is the Alkene group due to the presence of the carbon-carbon double bond ([tex]\( C=C \)[/tex]).
Functional group: Alkene
### (e) [tex]\( CH_3CH_2CH_2CO_2H \)[/tex]
- This molecule is known as Butanoic acid.
- The structural formula includes a carboxylic acid group ([tex]\( CO_2H \)[/tex]) attached to a butyl group ([tex]\( CH_3CH_2CH_2 \)[/tex]).
- The functional group here is the Carboxyl group because of the presence of the [tex]\( CO_2H \)[/tex] group.
Functional group: Carboxyl
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So, the identified functional groups for the given molecules are:
(a) [tex]\(\boxed{\text{Amino}}\)[/tex]
(b) [tex]\(\boxed{\text{None}}\)[/tex]
(c) [tex]\(\boxed{\text{Hydroxyl}}\)[/tex]
(d) [tex]\(\boxed{\text{Alkene}}\)[/tex]
(e) [tex]\(\boxed{\text{Carboxyl}}\)[/tex]
