Publisher's Synopsis
Excerpt from Outline of a Short Course in Qualitative Chemical Analysis: Arranged for Students in the Colleges of Science of the University of California
All vessels used must be kept scrupulously clean; they should invariably be cleansed immediately after using, rinsed once or twice with distilled water and left to drain or dry, not wiped.
A Reagent is a body which, by reacting chemically with a substance under examination, indicates its composition or sep arates some of its constituents.
General or group reagents separate several bases or acids (groups) at once; special reagents serve to detect individual metals or acids, or to subdivide groups. Many of them act by precipitating insoluble compounds of the substances sought for.
It is usual to commence by dissolving the substance to be tested, if solid, as chemical action goes on most readily between substances in solution warming usually facilitates chemical action and hastens the formation and settling of precipitates; many precipitates tend to ?oat on account of entangled gas bubbles or from their fine state of division, but become denser and settle on warming and shaking or stirring.
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