Synthetic Inorganic Chemistry

330 HEAVY METALS OF GROUPS VI, VII, AND VIII Procedure: Pulverize 98 grams of potassium dichromate, and cover it in an 8-inch po ...

BASIC LEAD CHROMATE 331 It is often true that a basic salt is less soluble than either the base itself or the salt, and in such ...

332 HEAVY METALS OF GROUPS VI, VII, AND VIII nitrate, (a) Write equation. (6) Explain the change in color, (c) Compare the react ...

CALCIUM MOLYBDATE 333 Apparatus: clay crucible of 600-cc. capacity, gas furnace. 6-inch iron sand bath, pail of sand, hammer. Pr ...

334 HEAVY METALS OP GROUPS VI, VII, AND VIII capable of combining with bases to form molybdates which are analogous to sulphates ...

SELENIOUS ACID 335 QUESTIONS Heat 1 gram of the product in a dry test tube. Smell cau- tiously. Observations? Equations? Heat a ...

336 HEAVY METALS OF GROUPS VI, VII, AND VIII crystal. Let stand undisturbed to aid formation of large crystals. Drain the crysta ...

MANGANESE CHLORIDE 337 tion, which is neutral and entirely free from iron salts, yields crystallized manganous chloride, MnCl 2 ...

338 HEAVY METALS OF GROUPS VI, VII, AND VIII QUESTIONS Explain the action of manganese dioxide in the generation of chlorine ga ...

POTASSIUM PERMANGANATE 339 manganate decomposes spontaneously, two-thirds being oxidized to permanganate at the expense of the o ...

340 HEAVY METALS OF GROUPS VI, VII, AND VIII stir continuously until the mass stiffens completely. Then cover the crucible and h ...

MANGANESE METAL BY THE GOLDSCHMIDT PROCESS 341 PREPARATION 72 MANGANESE METAL BY THE GOLDSCHMIDT PROCESS The principle of the pr ...

342 HEAVY METALS OF GEOUPS VI, VII, AND VIII cannot ignite the next addition instantly. On the other hand, if another portion is ...

FERROUS AMMONIUM SULPHATE^343 Procedure: Measure 222 cc. of 6N H2SO4 into a 500-cc. flask, and add 40 grams of iron filings in s ...

344 HEAVY METALS OF GROUPS VI, VII, AND VIII QUESTIONS What tests can be applied to show whether this preparation dissociates i ...

EXPERIMENTS 345 crystals, and wash them with a little distilled water. Dry them thoroughly at room temperature with white paper ...

346 HEAVY METALS OF GROUPS VI, VII, AND VIII The ease with which carbon dioxide is expelled from NiCO 3 indi- cates that nickelo ...

EXPERIMENTS 347 The decomposition of cobalt carbonate gives cobaltous oxide, COCO3 —• CoO + CO 2 , but this is easily oxidizable ...

348 HEAVY METALS OF GROUPS VI, VII, AND VIII (a) The gray-green Cr(OH) 3 dissolves to give a clear yellow solution. 2Cr(OH) 3 + ...

EXPERIMENTS 349 In (a) the oxygen of the air oxidizes MnO 2 to MnO 3 , an acidic oxide, in the presence of a base which will for ...