Treatise On Applied Analytical Chemistry Methods And Standards for the Chemical
Treatise On Applied Analytical Chemistry Methods And Standards for the Chemical
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The zinc and manganese sulphides are then collected, washed and treated on the filter with dilute acetic acid, which dissolves only the manganese sulphide. The residue, consisting of zinc sulphide, is dissolved on the filter by dilute hydrochloric acid and the solution evaporated to dryness in a tared crucible. The residue is mixed with an aqueous suspension of a little pure mercuric oxide free from alkali, evaporated to dryness, heated gently over a naked flame to eliminate the mercury, ignite...d over a blowpipe flame and weighed : ZnO X 0-8034 = Zn.
(d) DETERMINATION OF THE MANGANESE. The acetic acid solution of the manganese is concentrated and treated with ammonia and hydrogen peroxide to precipitate the manganese, the precipitate being collected, washed, dried, ignited and weighed : Mn 3 O 4 X 0-7203 = Mn.
3. Determination of the Arsenic and Antimony. (a) DETERMI- NATION OF THE ARSENIC. The alkaline sulphide solution obtained as described on p. 245 is acidified with acetic acid and heated for 3-4 hours on the water-bath, the arsenic and antimony sulphides and sulphur which separate being filtered off.
What to read after Treatise On Applied Analytical Chemistry Methods And Standards for the Chemical?
You can find similar books in the "Read Also" column, or choose other free books by Vittorio Villavecchia to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
The zinc and manganese sulphides are then collected, washed and treated on the filter with dilute acetic acid, which dissolves only the manganese sulphide. The residue, consisting of zinc sulphide, is dissolved on the filter by dilute hydrochloric acid and the solution evaporated to dryness in a tared crucible. The residue is mixed with an aqueous suspension of a little pure mercuric oxide free from alkali, evaporated to dryness, heated gently over a naked flame to eliminate the mercury, ignite...d over a blowpipe flame and weighed : ZnO X 0-8034 = Zn.
(d) DETERMINATION OF THE MANGANESE. The acetic acid solution of the manganese is concentrated and treated with ammonia and hydrogen peroxide to precipitate the manganese, the precipitate being collected, washed, dried, ignited and weighed : Mn 3 O 4 X 0-7203 = Mn.
3. Determination of the Arsenic and Antimony. (a) DETERMI- NATION OF THE ARSENIC. The alkaline sulphide solution obtained as described on p. 245 is acidified with acetic acid and heated for 3-4 hours on the water-bath, the arsenic and antimony sulphides and sulphur which separate being filtered off.
What to read after Treatise On Applied Analytical Chemistry Methods And Standards for the Chemical?
You can find similar books in the "Read Also" column, or choose other free books by Vittorio Villavecchia to read onlineMoreLess
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