Question

Write the IUPAC name : H2C = CH — CH2COOH​

Answer 1

ANSWER-

But-3-enoic acid

EXPLANATION-

1. Numbering is done from right to left because functional group is on the right side.
2. functional group present is carboxylic acid so -oic prefix is used.
3. double bond is present on 3rd carbon so we write but-3

HOPE IT SOLVED YOUR ISSUE.