acidimetry

[In Ger. acid i me trie.] [ACIDIMETER.] The proce of determining the quantity of real acid in a sample of hydrated acid. This may be done by volumetric or by weight analysis. The former method is carried out by ascertaining the measured quantity of a standard alkaline solution required to saturate a given volume of the acid. That by weight analysis can be effected in more ways than one. A convenient one is to decompose a known weight of the acid with an exce of acid carbonate of sodium or pota ium, and estimate by weight the quantity of carbonic anhydride evolved. When this is done the quantity of real acid can without difficulty be ascertained. (Watts: Chemistry.)