xii TABLE OF CONTENTS
CHAPTER XI. HEAVY METALS OP GROUPS VI, VII, AND VIII
PAGE
Preparations.. 320- Potassium Chromate and Dichromate 321
62 Chromic Anhydride. 324
63 Ammonium Chromate and Dichromate. 326
64 Chromic Alum 328 - Basic Lead Chromate .. 330
66 Chromium Metal.. 332
67 Calcium Molybdate. 333 - Ammonium Tungstate. ... 334
69 Selemous Acid. 335
70 Manganous Chloride. 336
71 Potassium Permanganate 338
72 Manganese Metal 341 - Ferrous Ammonium Sulphate and Feme Ammonium Alum 342
Experiments. 345
Stability of carbonates of metals in divalent state. Non-existence
of carbonates of tnvalent metals. Oxidation of a divalent oxide.
Properties of the hydroxides. Action of alkaline oxidizing agents
Oxidation in alkaline fusion. Permanganate Chromate and di-
chromate.
General Questions XI 350
APPENDIX
Concentration of Reagents ... ... 352
Tension of Saturated Aqueous Vapor.. 353
Electromotive Series ... 353
Periodic Classification of the Elements According to their Atomic
Numbers and the Arrangement of their Electrons 354
Chart The Periodic Arrangement according to Electron Groupings 355
Solubility Tables 364
Specific Gravity of Aqueous Hydrochloric Acid Solutions. 371
Specific Gravity of Aqueous Hydrobromic Acid Solutions ... 371LIST OP APPARATUS. 373
LIST OP RAW MATERIALS AND REAGENTS ..... 375TABLE OP ATOMIC WEIGHTS.. Inside front cover
PERIODIC ARRANGEMENT OP THE ELEMENTS Inside back cover