This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 edition. Excerpt: ...add to it water to about three fourths the volume it is intended to make; dissolve and well mix, and then ascertain by experiment how many c. c. and fractions of c. c. are required to neutralize 20 c. c. of the acid, a little litmus solution being added to the portion of acid measured out in order that, by its ...
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This historic book may have numerous typos and missing text. Purchasers can download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1882 edition. Excerpt: ...add to it water to about three fourths the volume it is intended to make; dissolve and well mix, and then ascertain by experiment how many c. c. and fractions of c. c. are required to neutralize 20 c. c. of the acid, a little litmus solution being added to the portion of acid measured out in order that, by its change of colour to purple, the point of neutralization, when enough soda has been added, may be shown, duplicate determinations being made to exclude error. The alkali should be rather stronger than is required; but, its volume being known, it is easy to dilute it to the required strength; thus, if 90 c. c. neutralize the acid, and there are 1848 c. c. made, 90: 100 = 1848: 2060, the number of c. c. to which the alkali must be made up. This is then done and the strength again tested, when 20 c. c. of acid should be exactly saturated by 100 c. c. of the alkali. The solution should be kept in well-stoppered bottles in a cool place, or in a bottle through the cork of which a tube containing a mixture of equal parts of sodium sulphate and quicklime, gently ignited together, is placed; it may then be kept a long time without deteriorating. The value of each c. c. of the alkali has now to be calculated. Since H2S04 saturates 2NH3, if the strength of the acid and alkali be as above, --H, S04 2NHa H2S04 in 20 o. o. NH 98: 34 =-98: -34. 20 c. c. of the acid are neutralized by 100 c. c. of the alkali; 34 therefore each c. c. of the latter corresponds to Ttjh =-0034 gram NH3, or-0028 gram N. Suppose that, after a nitrogen combustion, the contents of the bulb are exactly neutralized by 65 c. c. of the alkali, it is obvious that the acid has absorbed ammonia during the combustion equal in saturating power to 35 c. c. of the alkali, since 20 c. c..
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Add this copy of The Laboratory Guide for Students of Agricultural to cart. $29.15, Sold by Besleys Books rated 5.0 out of 5 stars, ships from Diss, UNITED KINGDOM, published by London, Van Voorst, 1864..
Edition:
London, Van Voorst, 1864.
Hardcover
Details:
Edition:
1st Edition
Publisher:
London, Van Voorst, 1864.
Language:
English
Alibris ID:
13127645460
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Seller's Description:
8vo. 1st ed. 18.5 x 12.0cms. A few text illustrations, original blindstamped cloth with gilt lettering to spine. Corners slightly rubbed, sporadic foxing, owner's details on 1/2 title, a few pencil annotations, top margin of some pp damaged and made brittle.