Elicit how carbon dioxide and sulfur trioxide will form acidic solutions without hydrogen atom present in the formula. Show how carbon dioxide forms carbonic acid in a two step process, and discuss the Ka of each step. Outline carbon dioxide, sulfur dioxide, sulfur trioxide and nitrogen dioxide as acidic oxides.
Discuss and outline how metal oxides such as calcium oxide are base oxides forming a metal oxide base such as calcium hydroxide when dissolved in water,