Name: Geometrical Isomerism in Organic Compounds
Uploaded: 2019-07-19
Duration: 6 min 28 s
Description: Two molecules having the same formula can have different spatial arrangements of atoms giving rise to geometrical isomers. Let's learn what they are and how...

Question

Match the following columns.

Column I	Column II
(i) Ethanoic acid	(a) $H_{3} C - {CH}_{2} - {CH}_{2} - {CH}_{2} - {CH}_{2} - Br$
(ii) Bromopentane	(b) ${CH}_{3} COOH$
(iii) Butanone	(c) $H_{3} C - {CH}_{2} - {CH}_{2} - {CH}_{2} - {CH}_{2} - CHO$
(iv) Hexanal	(d) $H_{3} C - {CH}_{2} - (C = O) - {CH}_{3}$

Accepted Answer

(i) The IUPAC name of ethanoic acid indicates that the parent chain consists of two carbon atoms and hence the root word is 'eth'. The valencies of carbon atoms are satisfied by single bonds as the root word ends with 'ane'. A carboxylic acid functional group, $- COOH$ is present in this compound, so the suffix used is 'oic acid'. Therefore, the condensed structure of ethanoic acid is ${CH}_{3} COOH$ .

(ii) The IUPAC name bromopentane indicates that the parent chain consists of five carbon atoms and hence the root word is 'pent'. All the valencies of carbon atoms are satisfied by single bonds as the root word ends with 'ane'. Hetero atom bromine is present at the carbon as a substituent for hydrogen, so the prefix used is 'bromo'. Therefore, the condensed structure of bromopentane is $H_{3} C - {CH}_{2} - {CH}_{2} - {CH}_{2} - {CH}_{2} - Br$ .

(iii) The IUPAC name butanone or butan-2-one indicates that 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 as the root word ends with 'ane'. Ketone functional group is present at second carbon, so the suffix used is 'one' and the number 2 represents the position of the keto group. Therefore, the condensed structure of butanone is ${CH}_{3} COOH$ .

(iv) The IUPAC name hexanal indicates that the parent chain consists of six carbon atoms and hence the root word is 'hex'. All the valencies of carbon atoms are satisfied by single bonds as the root word ends with 'ane'. Aldehyde functional group, $- CHO$ is present at the carbon atom, so the suffix used is 'al'. Therefore, the condensed structure of hexanal is $H_{3} C - {CH}_{2} - {CH}_{2} - {CH}_{2} - {CH}_{2} - CHO$ .

Column I Column II

(i) Ethanoic acid (b) ${CH}_{3} COOH$

(ii) Bromopentane (a) $H_{3} C - {CH}_{2} - {CH}_{2} - {CH}_{2} - {CH}_{2} - Br$

(iii) Butanone (d) $H_{3} C - {CH}_{2} - (C = O) - {CH}_{3}$

(iv) Hexanal (c ) $H_{3} C - {CH}_{2} - {CH}_{2} - {CH}_{2} - {CH}_{2} - CHO$

Important Questions on General Organic Chemistry

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Match the following columns. Column I Column II (i) Ethanoic acid (a) H3C-CH2-CH2-CH2-CH2-Br (ii) Bromopentane (b) CH3COOH (iii) Butanone (c) H3C-CH2-CH2-CH2-CH2-CHO (iv) Hexanal (d) H3C-CH2-C=O-CH3

Important Questions on General Organic Chemistry

Learn and Prepare for any exam you want !