Full set of Notes with Fill-Ins - San Jose State University

Chem 155 Unit 1 Page 39 of 3161.1.22 How to make primary stock solution:1. Weigh out the desired quantity of pure (e.g. dry,or oxide-free) analyte material.2. Dissolve this amount quantitatively, i.e. withoutany loss, in the desired solvent.3. Transfer this liquid quantitatively into thedesired volumetric flask.4. Dilute to volume with the desired solvent – thisprocess is important! It is often poor practice toadd 5 mL of ‘a’ to 5 mL of ‘b’ and anticipate thatthe final volume will be exactly 10 mL!Remember the words DILUTE TO VOLUME!Page 39 of 316