Category: History - Modern (1750+)

An examination of some methods employed in determining the atomic weight of Cadmium

Bucher, John Emery, 1872-1943· 4 chapters· 12,040 words

I. Introduction and Historical Statement 1 II. The Oxalate Method 3 Preparation of Pure Cadmium 3 Preparation of Nitric Acid 4 Purification of Water 4 Purification of Oxalic Acid 5 Preparation of Cadmium Oxalate 7 Procedure 8 Results 13 III. The Sulphide Method 16 Preparation...

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Chapters

1. Part 1

I. Introduction and Historical Statement 1 II. The Oxalate Method 3 Preparation of Pure Cadmium 3 Preparation of Nitric Acid 4 Purification of Water 4 Purification of Oxalic Aci...

2. Part 2

Four different specimens of cadmium chloride were used in this work and from these specimens portions were taken for analysis. These portions were treated differently in differe...

3. Part 3

The first three determinations were made exactly like those in the chloride method. The last two were also made in the same manner, only the washing of the precipitate was varie...

4. Part 4

A great deal of time was spent in trying to effect a partial synthesis of cadmium bromide in exactly the same manner as had been used in case of cadmium sulphate. No results wer...