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Bog, hæftet Journal of the Chemical Society, 1900, Vol. 78: Abstracts of Papers on Organic Chemistry; Part I (Classic Reprint) af Great Britain Chemical Society

Journal of the Chemical Society, 1900, Vol. 78: Abstracts of Papers on Organic Chemistry; Part I (Classic Reprint)

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Excerpt from Journal of the Chemical Society, 1900, Vol. 78: Abstracts of Papers on Organic Chemistry; Part I

The chromic acid contained in the solution used for purifying acetylene is estimated as follows. 25 grams are boiled with 100 of a 5 per cent. Sodium hydroxide soluti... Læs mere

Excerpt from Journal of the Chemical Society, 1900, Vol. 78: Abstracts of Papers on Organic Chemistry; Part I

The chromic acid contained in t... Læs mere

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Engelsk
ISBN-13:
9781334333804
Sideantal:
736
Udgivet:
01-11-2016
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Excerpt from Journal of the Chemical Society, 1900, Vol. 78: Abstracts of Papers on Organic Chemistry; Part I

The chromic acid contained in the solution used for purifying acetylene is estimated as follows. 25 grams are boiled with 100 of a 5 per cent. Sodium hydroxide solution, the cooled liquid made up to a litre, and 50 then treated with 8 of a 10 per cent. Solution of potassium iodide, together with about 18 cc. Of a 20 per cent. Solution of hydrochloric acid, 200 c.c. Of water, and a slight excess of sodium thiosulphate solution. The excess of thiosulphate is titrated with iodine solution. The results obtained show that pure acetylene is not attacked by the chromic acid solution and that the amount of solution required for purifying the gas is dependent on the quantity of gas to be treated and amount of impurity it contains.

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