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. 1873 edition. Excerpt: ... bent twice at right angles. Let the longer leg of the tube pass through a cork fitted air tight into a two-necked WoulfTs bottle, and just dip into the water. Fit a delivery-tube to the other neck leading to the pneumatic trough, as in Fig. 28. A three-necked "WoulfTs bottle may be used in this case, ...
Read More
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. 1873 edition. Excerpt: ... bent twice at right angles. Let the longer leg of the tube pass through a cork fitted air tight into a two-necked WoulfTs bottle, and just dip into the water. Fit a delivery-tube to the other neck leading to the pneumatic trough, as in Fig. 28. A three-necked "WoulfTs bottle may be used in this case, as in making a solution of hydrochloric acid, explained in next chapter A straight tube is fitted to the central neck, dipping into the water, so that air is admitted if the pressure from the generating flask diminishes, preventing a backward rush of water. On the other hand, if the pressure is too great, the water rises in the central tube. Such an arrangement is called a safety tube. The latter must be filled with water as hot as the hand can hear, as chlorine is soluble in cold water to the extent of two or three times its volume. Put about an ounce of finely-powdered manganic dioxide into the flask, pour in enough of the strongest commercial hydrochloric acid, to thoroughly wet the Mn02 by shaking it. Replacs the cork, and arrange the apparatus, jars being filled with water and inverted ready in the trough. Heat the flask over a sand-bath, the chlorine will come off' rapidly, any HC1 that comes over without being decomposed being dissolved by the water in the "Wpulff's bottle. Replace the first Fig. 23. jar, when full, by another, covering the first with a greased glass plate, and removing it to the table. Exp. 3. To show the solubility of chlorine, nearly fill a smallmouthed bottle with the gas, cover with the thumb and shake well; then put the mouth of the bottle under water and remove the thumb, more water will rush in, absorbing or dissolving the gas. Repeat this operation several times, and a solution of the gas will be...
Read Less
