Question

Name the:
(a) acidic anhydride of the following acids:
(iv) Carbonic acid

Answer 1

Acidic oxides are also known as acidic anhydride. When such acidic anhydride dissolves in water they produce acid. The acidic anhydride of carbonic acid $H_2{CO}_3$ is carbon dioxide ${CO}_2$
It reacts with water to form carbonic acid. That is,
${CO}_2+H_{2}O\to H_2{CO}_3$