Give four method of acid preparation and give two reactions to support your answer

Synthetic method : In the synthetic method, acids are prepared by direct combination of elements. For example, hydrogen and chlorine react together under the action of an electric spark to produce hydrogen chloride gas which is absorbed in water to give hydrochloric acid. Nitric acid reacts with sodium carbonate to form sodium nitrate, carbon dioxide and water. Sulfuric acid reacts with calcium carbonate to form calcium sulfate, carbon dioxide and water. Hydrochloric acid reacts with calcium carbonate to form calcium chloride, carbon dioxide and water.

Explanation:

periodic trends is an atom that gets larger as the number of electronic shells increase, the radius of atoms increases as you go down a certain group in the periodic table of elements. in general, the size of an atom will decrease as you move from left to right of a certain period.

the awnser is group 12