Gravimetric Analysis. A Gravimetric analysis is based upon the measurement of the weight of a substance that has a KNOWN composition AND IS chemically related to the analyte. Gravimetric Analysis. Accurate and precise. Possible sources of errors can be checked.
1. Must be a stoichiometric reaction.
2. A stable product; no oxidation, dehydration or gelatinous precipitates.
3. Must avoid side reactions which result in coprecipitates.
[AgCl] = 1
KTSP = [Ag+][Cl-]