Name: Polymers
Uploaded: 2019-07-19
Duration: 4 min 16 s
Description: In this video, we will learn what fabrics are, their various types, synthetic fibres, monomers, polymers and most interestingly, cotton as a polymer.

Question

Complete the table by writing their IUPAC names in the third column.

Accepted Answer

The IUPAC name of the compound with the structural formula $H_{2} C = {CH}_{2}$ is ethene. The parent chain consists of two carbon atoms and hence the root word is 'eth'. The valencies of carbon atoms are satisfied by both double and single bonds, so the suffix 'ene' is used.

The IUPAC name of the compound with the structural formula $HC \equiv CH$ is ethyne. The parent chain consists of two carbon atoms and hence the root word is 'eth'. The valencies of carbon atoms are satisfied by both triple and single bonds, so so the suffix 'yne' is used.

The IUPAC name of the compound with the structural formula ${CH}_{3} COOH$ is ethanoic acid. The parent chain consists of two carbon atoms and hence the root word is 'eth'. All the valencies of carbon atoms are satisfied by single bonds, so the root word ends with 'an'. An acid functional group, $- COOH$ is present, so the suffix used is 'oic acid'.

The IUPAC name of the compound with the structural formula ${CH}_{3} OH$ is methanol. The parent chain consists of one carbon atom and hence the root word is 'meth'. All the valencies of carbon atoms are satisfied by single bonds, so the root word ends with 'an'. An alcohol functional group, $- OH$ is present, so the suffix used is 'ol'.

The IUPAC name of the compound with the structural formula ${CH}_{3} {CH}_{2} OH$ is ethanol. The parent chain consists of two carbon atoms and hence the root word is 'eth'. All the valencies of carbon atoms are satisfied by single bonds, so the root word ends with 'an'. An alcohol functional group, $- OH$ is present, so the suffix used is 'ol'.

The IUPAC name of the compound with the structural formula ${CH}_{3} CHO$ is ethanal. The parent chain consists of two carbon atoms and hence the root word is 'eth'. All the valencies of carbon atoms are satisfied by single bonds, so the root word ends with 'an'. An aldehyde functional group, $- CHO$ is present, so the suffix used is 'al'.

The IUPAC name of the compound with the structural formula ${CH}_{3} {COCH}_{3}$ is propanone. The parent chain consists of three carbon atoms and hence the root word is 'prop'. All the valencies of carbon atoms are satisfied by single bonds, so the root word ends with 'an'. A ketone functional group, $> CO$ is present, so the suffix used is 'one'.

The IUPAC name of the compound with the structural formula ${CH}_{3} {COCH}_{2} {CH}_{3}$ is 2-butanone or butan-2-one. The parent chain consists of four carbon atoms and hence the root word is 'but'. All the valencies of carbon atoms are satisfied by single bonds, so the root word ends with 'an'. A ketone functional group, $> CO$ is present at the second carbon, so the suffix used is 'one'.

The IUPAC name of the compound with the structural formula ${CH}_{3} {CH}_{2} {NH}_{2}$ is ethanamine. The parent chain consists of two carbon atoms and hence the root word is 'eth'. All the valencies of carbon atoms are satisfied by single bonds, so the root word ends with 'an'. An amine functional group, ${NH}_{2}$ is present, so the suffix used is 'amine'.

The IUPAC name of the compound with the structural formula ${CH}_{3} {CH}_{2} {CH}_{2} Cl$ is 1-chloropropane. The parent chain consists of three carbon atoms and hence the root word is 'prop'. All the valencies of carbon atoms are satisfied by single bonds, so the root word ends with 'ane'. Heteroatom chlorine is present at the first carbon, so the prefix 'chloro'.

Complete the table by writing their IUPAC names in the third column.

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