. Essentials of medical and clinical chemistry. With laboratory exercises . Potassium Carbonate.—K2C03.—Obtained as an impure solu-tion (lye) by lixiviating the ashes of plants, especially foresttrees. This, evaporated to dryness, forms concentrated lye orpotash. This in turn when purified forms pearl-ash, which Fig. 39. Kf C(k. is further purified for medicinal use. Sometimes made by burn-ing cream of tartar and lixiviating the residue; hence called saltsof tartar. A white semi-crystalline or granular powder. C03 Potassium. Metal. Let the instructor (l49) inflame a bit of metallic K bylowerin
. Essentials of medical and clinical chemistry. With laboratory exercises . Potassium Carbonate.—K2C03.—Obtained as an impure solu-tion (lye) by lixiviating the ashes of plants, especially foresttrees. This, evaporated to dryness, forms concentrated lye orpotash. This in turn when purified forms pearl-ash, which Fig. 39. Kf C(k. is further purified for medicinal use. Sometimes made by burn-ing cream of tartar and lixiviating the residue; hence called saltsof tartar. A white semi-crystalline or granular powder. C03 Potassium. Metal. Let the instructor (l49) inflame a bit of metallic K bylowering into a jar of chlorine, Fig. 37, or (l5()) make an explosion by warmingit with iodine or dropping it into bromine, taking care to cover the experimentwith a bell jar. 151 Load a strong toy cannon with gun-powder, lay a small bitof K in the fuse and touch off with a piece of ice. Fig. 39. 92 ESSENTIALS OF CHEMISTRY. being a weakly acidulous (negative) radical, K2C03 is very alka-line, even Acid Salts.—Salts are formed by a metallic radical displacingthe basic H of an acid. If all the H is displaced, the result is anormal salt, as, H2S044 K2 — K2S04,-h H2. But if part of thebasic H of the acid remains, it is called an acid salt, as H2S04+K^KHS04+H. Sometimes acid salts are called bi salts,because the prop
Size: 2269px × 1102px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1900, booksubjectpharmaceuticalchemis
