See if you have digested this section by answering the following questions: (a) What is the difference between absorption and adsorption? (b) How is an inclusion different from an occlusion? (c) What...

(a) What is the difference between absorption and adsorption?

(b) How is an inclusion different from an occlusion?

(c) What are desirable properties of a gravimetric precipitate?

154 7 Gravimetric and Combustion Analysis

(d) Why is high supersaturation undesirable in a gravimetric precipitation?

(e) How can you decrease supersaturation during a precipitation?

(f) Why are many ionic precipitates washed with electrolyte solution instead of

pure water?

(g) Why is it less desirable to wash AgCl precipitate with aqueous NaN03 than with

HN03 solution?

(h) Why would a reprecipitation be employed in a gravimetric analysis?

(i) What is done in thermogravimetric analysis?