Some Aromatic Carboxylic acids and their Nomenclature Preparation and Properties
→ Chain Isomerism : Such type of isomerism is present when compounds have same molecular formula but different carbon chain.
Chain isomerism in C4H8O2
→ Functional Isomerism : In such type of isomerism different functional groups are present in isomers.
C2H4O2 have following isomers.