Draw the structure of the following compounds and identify the functional group present in them.
(i) Butanoic acid (ii) Bromopropane (iii) Butyne

Explanation

It is the reaction that formS soap when an ester reacts with water in the presence of base a salt of carboxylic acid and an alcohol are produced. Sucha reaction is called saponification.
For example: When ethyl ethanote is heated with a solution of sodium hydroxide sodium cthanote and ethanol are produced.
`CH_(3)COOC_(2)H_(5)+NaOHrarrCH_(3)COONa+C_(2)H_(5)OH`
Function group is carboxylie acid

(ii) Function group is Bromine
`H - underset("H")underset(|)overset("H")overset(|)(C)-underset("H")underset(|)overset("Br")overset(|)(C)- underset("H")underset(|)overset("H")overset(|)(C)- underset("H")underset(|)overset("H")overset(|)(C)-H`