Name the following organic compounds:
i]. The compound with 3 carbon atoms whose functional group is a carboxyl.
ii] The first homologue whose general formula is `C_2H_(2n)`.
iii) The compound that reacts with acetic acid to form ethyl ethanoate.
iv] The compound formed by complete chlorination of ethyne.

Explanation

The compound with three carbon atoms whose functional group is carboxyl Propanoic acid `CH_(3)CH_(2)COOH`