Types of Acids in the body a volatile acids Can leave solution and enter the atmosphere. H2 CO3(carbonic acid ). Pco2 is most important factor in ph of body tissues.Types of Acids in the Body ◼ Volatile acids: ◼ Can leave solution and enter the atmosphere. ◼ H2CO3 (carbonic acid). ◼ Pco2 is most important factor in pH of body tissues