This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ... nitrite, KN02. Ammonium chlorid, NH4Cl. Apparatus. A tin box-cover or some similar object that will float on water. A stoppered bell jar or a two-liter bottle cut off near the bottom and fitted with a stopper. A pneumatic trough. Apparatus as shown in Fig. 23, consisting of a half-liter flask fitted ...
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This historic book may have numerous typos and missing text. Purchasers can usually download a free scanned copy of the original book (without typos) from the publisher. Not indexed. Not illustrated. 1916 edition. Excerpt: ... nitrite, KN02. Ammonium chlorid, NH4Cl. Apparatus. A tin box-cover or some similar object that will float on water. A stoppered bell jar or a two-liter bottle cut off near the bottom and fitted with a stopper. A pneumatic trough. Apparatus as shown in Fig. 23, consisting of a half-liter flask fitted with a two-hole stopper through which pass a small separating funnel and exit tube as shown. Ring stand and gauze. 5-6 fruit jars or bottles. Combustion spoon. Procedure. (a) Natural nitrogen from air. Float the cover hollow side up on water in a tank. Place in it a piece of phosphorus the size of a pea and light the phosphorus. Quickly cover the burning phosphorus with the bottle, pressing the bottle down into the water so that air is imprisoned inside the bottle over the water. Describe and explain what happens. What is the "smoke "? What constituent of the atmosphere is used up? The remaining gas is mostly nitrogen. Allow the bottle to stand until the "smoke " has dissolved in the water and the gas in the bottle is clear; then make the water level the same inside and outside the bottle. The nitrogen in the bottle is sufficiently pure for most experiments. Does it have any color, odor, or taste? Determine by proper experiments whether nitrogen burns or supports combustion. A thistle tube will serve the purpose if a separating funnel is not available. (J) Chemically pure nitrogen. Set up the apparatus as shown in Fig. 23. Dissolve 16 g. of ammonium chlorid in 50 ccm. of water and intro that the liberation of gas does not become too rapid. If the action slackens, add more nitrite solution, a few cubic centimeters at a time. When the air has been driven out of the apparatus collect several bottles of gas. Determine by...
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