Methods in Chemical Analysis, Originated or Developed in the Kent Chemical Laboratory of Yale University (Classic Reprint) - Couverture souple

Frank Austin Gooch

Couverture souple

ISBN 10 : 1330663284 ISBN 13 : 9781330663288

Editeur : Forgotten Books, 2018

Synopsis

The digital edition of all books may be viewed on our website before purchase. Excerpt from Methods in Chemical Analysis, Originated or Developed in the Kent Chemical Laboratory of Yale University (Classic Reprint)



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A propos du livre

Présentation de l'éditeur

The tubes A and Bare so selected that very little of the product evolved can escape between them, and, in case they fit very loosely, a ring of paraffin melted into the mouth of A, about B, by means of a hot wire, seals the joint securely. A very convenient way to attach the paraffin is to melt it between A and another tube, which fits A, as does B, and may be removed by a turning motion, leaving the ring into which Bwill fit. Very little heating is then required to make a tight joint. If care be used in taking apart A and B, at the close of an experiment, such a ring of paraffin remains in place and may be used many times without replacement, being remelted by a touch of the hot wire before every new experiment. In making a determination, the substance under examination is weighed and placed in the bottom of A. The reagent to be employed, 10 cm.3 to 15 cm.3, is drawn into C, and held there in the manner described. The test tube A is slipped over B, and the joint is sealed with paraffin, as has been shown. The apparatus is wiped, placed on the balance and weighed. Upon removing the cap from the small tube in C, the reagent runs from Cinto A. The volatile product, forced upward through the drying column of calcium chloride, escapes through the annular space between Band C. When action ceases, a current of dry air is forced through C, to remove all the volatile product, the cap is replaced, and the apparatus is weighed. The loss of weight represents the volatile product. Hydrogen by Loss.
(Typographical errors above are due to OCR software and don't occur in the book.)

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Détails de l'édition

• Éditeur: Forgotten Books
• Date d'édition: 2018
• Langue: anglais
• ISBN 10: 1330663284
• ISBN 13: 9781330663288
• Reliure: Broché
• Nombre de pages: 572
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