
Interpretation:
The number of isomeric esters possible for 2-methylpropanoic acid has to be given.
Concept Introduction:
Organic compounds are represented shortly by the molecular formula and structural formula. Each and every compound has its own molecular formula. Compounds can have same molecular formula but not same structural formula.
Isomers are the compounds that have same molecular formula but different structural formula. The main difference lies in the way the atoms are arranged in the structure. Isomers have different chemical and physical properties even when they have same molecular formula.
Positional isomerism exists in esters when the alkyl group and acyl group carbon chain can be arranged in different ways.

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Chapter 5 Solutions
Organic And Biological Chemistry
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