Date of Award

6-1964

Document Type

Union College Only

Degree Name

Bachelor of Science

Department

Chemistry

Language

English

Abstract

Due to its relative scarcity, gold has always held a high value to civilizations compared to other metals which are more common and easier to obtain. Various methods of extraction of the metal have been used throughout history, the most successful of which are washing and dissolution. The most important method of recovery at the present time is dissolution by cyanidation. In order to study the electron exchange between the Au(CN)-2 and Au(CN)-4 complexes, it must be possible to obtain both separately, mix them together in solution, separate them once again, and distinguish between the two complexes to determine the degree of separation. The Au(CN)-2 complex is available as the potassium salt, but the Au(CN)-4 must be synthesized from HAuCl4 ⋅3H2O by a modification of the method adopted from Wogrinz by Hartwell. (6)

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