carbon dioxide from decomposing organic matter and root respiration dissolving in soil water to form a weak organic acid; (3) formation of strong organic and inorganic acids, such as nitric and ...

Elemental sulfur (S) is a tasty treat for bacteria, like Thiobacillus, which naturally occur in soil. Thiobacillus munches on the sulfur, converting it into sulfuric acid via oxidation.

FOR the analysis of the nitrate content of sea water, and for certain tests on alkaloids, it is necessary to have sulphuric acid free from all but the most minute amounts of nitric acid.