Question

(i) Define Isomerism. Explain Position isomerism with examples. 

(ii) Write structural formulae for compounds named as 

(a) 1-Bromoheptane 

(b) 5-Bromoheptanoic acid

Answer 1

(i) Two or more compounds having the same molecular formula but different physical and chemical properties are called isomers and this phenomenon is called isomerism.

Position Isomerism: Compounds which have the same structure of carbon chain but differ in position of double or triple bonds or functional group are called position isomers and this phenomenon is called position isomerism. e. g

CH₃ − CH₂ − CH = CH₂ − CH₃ − CH = CH − CH₃

(ii)

1 - Bromoheptane

5 - Bromoheptanoic acid