Exercises in Chemistry, Systematically Arranged to Accompany McPherson and Henderson's Elementary Study of Chemistry (Paperback)

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. 1906 edition. Excerpt: ... SAPONIFICATION Add 10 cc. of alcohol to 4 or 5 g. of lard in an evaporating dish. To the resulting mixture add about 1 cc. of a 50 per cent solution of sodium hydroxide in water. Evaporate carefully, stirring the mixture constantly until the odor of alcohol can no longer be detected. Write the equation for the reaction on the supposition that the lard is composed of palmitin. What remains in the dish? Add a few cubic centimeters of cold water, stir well, and filter, if necessary, to obtain a clear solution. Add a little of the resulting solution to test tubes containing calcium sulphate and magnesium sulphate, respectively. Explain the results. LIST OF THE ELEMENTS, THEIR SYMBOLS, AND ATOMIC WEIGHTS The more important elements are marked with an asterisk 0= 16 Weight of 1 Liter of Various Gases measured under Standard Conditions Densities and Melting Points of Some Common Elements Melting Density Point 2.68 640 6.70 432 5-73--3-75--9.80 270 2.45--8.67 320 1.88 26.5 1.54--3-5--2.15--1.80--Aluminium Antimony Arsenic. Barium Bismuth. Boron.. Cadmium Caesium. Calcium. Carbon, Diamond "Graphite "Charcoal Chromium Cobalt... Copper... Gold.... Iridium... Iron.... Lead.... Lithium... Magnesium Manganese Mercury. Nickel Osmium. Palladium Phosphorus Platinum. Potassium Rhodium. Rubidium Ruthenium Silicon Silver.. Sodium. Strontium Sulphur. Tin... Titanium. Zinc.. Density 175 8.01 13-596 8.9 22.47 11.80 1.80 21.50 0.87 12.10 1.52 12.26 Melting Point 750 1900-39-5 1600 1500 45 1779 62.5 38-5 960 97.6 114.8 235 420