acidify the liquor with nitric and boil down to about 100 c.c.
Boil off the gas, add ammonia until a precipitate is formed, and then acidify somewhat strongly with acetic acid.
Evaporate to a thin syrup, acidify strongly with phosphoric acid.
Extract with water, acidify with acetic acid, and estimate volumetrically as described under Sulphur.
acidify the solution of soluble ash, obtained in 9, with dilute nitric acid and determine phosphoric acid (P2O5).
acidify as nitric acid, precipitate as silver chloride by sodium chloride or hydrochloric acid, and reduce as vide III, below.
acidify with glacial acetic acid, shake a moment, and then make alkaline with ammonium hydrate.
Hence it is now practically always necessary to acidify artificially the tan liquors.
acidify a·cid·i·fy (ə-sĭd'ə-fī')
v. a·cid·i·fied, a·cid·i·fy·ing, a·cid·i·fies
To make or become acid.