Laboratory Methods of Inorganic Chemistry, 2nd English Ed. 1928

LEAD TETRAPHENYL. 215 condenser. Heat the mixture on the water-bath until a thick, grayish mass is formed and no more ethyl iodi ...

216 METAL-ORGANIC COMPOUNDS. Lead Tetraphenyl. Place 70 g. of perfectly dry ether, which has stood several days in contact with ...

NICKEL CARBONYL. 217 the deep lemon-yellow crystals, wash them with a little alcohol, and dry them at a gentle heat. The product ...

218 METAL-ORGANIC COMPOUNDS. box^1 (cf. Fig. 4, p. 3) around the combustion tube and insert a thermometer into the chamber. Heat ...

CHAPTER VII. PREPARATION OF COMPOUNDS OF THE RARE ELEMENTS FROM THEIR MINERALS. IN this chapter methods are described for prepar ...

220 COMPOUNDS OF THE RARE ELEMENTS. water; again evaporate the solution to dryness, and dehydrate the residue completely by heat ...

BERYLLIUM HYDROXIDE. 221 lengths as ordinates, and connect the separate points by a smooth curve. One millimeter on the plot may ...

222 COMPOUNDS OF THE RARE ELEMENTS. ammonium carbonate in 600 c.c. of water, whereby only a slight clouding should occur. Then d ...

COLUMBIUM AND TANTALUM COMPOUNDS. 223 bottom of the tube. The salt is insoluble in cold water but is decomposed by hot water. It ...

224 COMPOUNDS OF THE RARE ELEMENTS. Determine the actual amount of the oxides present by igniting 0.6 g. of the powder in a plat ...

MOLYBDENUM COMPOUNDS FROM MOLYBDENITE. 225 the powder in a small evaporating dish, heating strongly with a Fletcher burner, and ...

226 COMPOUNDS OP THE RARE ELEMENTS. drawn out a little at one end, and fill the tube with hydrogen which has been washed success ...

MOLYBDENUM COMPOUNDS FROM MOLYBDENITE. 227 strictions in the combustion tube so that at these points the inside diameter is from ...

228 COMPOUNDS OF THE RARE ELEMENTS. occasionally playing a Bunsen flame over the constriction at B, bring the product into the s ...

TUNGSTEN COMPOUNDS FROM WOLFRAMITE. 229 there vaporizes, and then continue to heat so that 5 to 10 cm. of the section CD remains ...

230 COMPOUNDS OF THE RARE ELEMENTS. Wash the insoluble residue, consisting of silicic acid, unat- tacked wolframite, and yellow ...

WORKING UP OF PITCHBLENDE. 231 Tungsten Trioxide, WO 3. This oxide can be obtained by heat- ing either of the above acids, or it ...

232 COMPOUNDS OF THE RARE ELEMENTS. Uranium compounds are obtained technically from pitchblende by digest- ing the ore with nitr ...

TESTING FOR RADIOACTIVITY. 233 the solution with ammonia, and then treat it with a solution of oxalic acid. This precipitates as ...

234 COMPOUNDS OF THE RARE ELEMENTS. plate that is connected with the earth should be supported. Charge the electroscope, and mea ...