Dissolve small portions of your unknown acid in distilled water and titrate with the standardized NaOH to a phenolphthalein endpoint. Repeat the titration two more times. Calculate the equivalent weight of your unknown acid. Report this along with the unknown's code number. A better procedure would be to dry the unknown acid prior to titration.
Polyprotic acids can undergo neutralization to produce both normal and acid salts.
Calculate the equivalent weight of phosphoric acid for the production of each of the three possible phosphate salts. This document was formatted to display properly with Netscape v2.0. If your browser does not support the Netscape extensions you may not see this document as intended, that is, you may have weird looking characters on the screen.