Inhaltsangabe
This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1922. Excerpt: ... used, (b) several examples of any particular case; (c) the equations involved, (d) the reaction at the true end-point and a graphic explanation, (e) the indicator us"ed and why; 8. General methods for the preparation of standard solutions. Specific methods for the preparation of standard acid and standard alkalis. Relative accuracy of the various methods for preparing standard acid.?. The determination of each of two acids when present together. 10. The errors of acidimetric alkalimetric processes. ll. Two methods for the determination of salts of very weak acids that are volatil. 12. The determination by two methods of fixed alkali carbonate and bicarbonate when present together; equations involved. l3. The determination of fixed alkali hydroxide and carbonate when present together, by two methods; Equations involved. l4. The determination of C0g by absorption in alkali. 15. The acidimetric determination NH3. 16. Typical Problems. Remember that the hydrogen equivalent depends upon the reaction involved and is ultimately determined by the reaction in which the standard solution is used. 0XIDATI0N AND REDUCTI0N PR0CESSES. (Blasdale p. 3l4 Treadwell-Hall p.596). The standard solutions used in these processes are either oxidizing or reducing agents; they may vary widely in their properties from strong oxidizing agents such as KMn04 to weak ones juch as iodine, and similarly for reducing agents. The table in Blasdale p. 320 will give an idea of the difference between various substances. The oxidizing agents most commonly used in standard solutions are KMn0/KgCrgOy, KI0, KBr0, I. The most common reducing agents similarly usea are FaAs0s (or NaAs0g), FeS04, NagSg0, HpGg0. Few of these have the properties required for a standard substance.KgCrp0y KI0, KBr03 may ...
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