Synthetic Inorganic Chemistry

290 ELEMENTS OF GROUP IV Make mixtures of gasoline and carbon tetrachloride in the proportion of 5 cc. and 1 cc.; 4 cc. and 2 cc ...

EXPERIMENTS 291 possible, using the flame spreader, and note if now any gas issues from the delivery tube which is not absorbed ...

292 ELEMENTS OF GROUP IV affected. Add Na 2 CO 3 solution and warm gently, noting that there is no effervescence. (6) Collect a ...

EXPERIMENTS 293 the chloride, nitrate, and sulphate, can exist in solution indicates that stannous hydroxide is basic; but that ...

294 ELEMENTS OF GROUP IV to produce the maximum precipitate and again the amount necessary to redissolve the precipitate. Repeat ...

EXPERIMENTS 295 In the same way that the higher oxide SnO 2 is more acidic than SnO, the higher sulphide SnS2 is more acidic and ...

296 ELEMENTS OF GROUP IV visible. Let the rest of the yellow solution grow warm and note that chlorine gas is evolved and that a ...

GENERAL QUESTIONS IX 297 GENERAL QUESTIONS IX Arrange a table of the dioxides of the elements of Group IV: column 1, the formul ...

CHAPTER X ELEMENTS OF GROUP V OF THE PERIODIC SYSTEM In this group, as in Groups III and IV, the difference in prop- erties betw ...

ORTHO-PHOSPHORIC ACID 299 upon phosphorus contains a considerable quantity of phosphorous acid, H 3 PO 3 ; but upon concentratin ...

300 ELEMENTS OF GROUP V until all the phosphorus is used. Then add 20 cc of 16 N HN0 3 ; boil the mixture gently in the flask wi ...

DISODIUM PHOSPHATE 301 mediately after the violent secondary reaction has ceased, is poured into a flask, diluted to about a lit ...

302 ELEMENTS OF GROUP V Ca 3 (PO 4 ) 2 , 10 per cent CaCO 3 , and 10 per cent inert material. The following reactions with sulph ...

PHOSPHORUS TRIBROMIDE 303 Procedure: Put the bone ash in a porcelain evaporating dish, add 70 cc. of water, and stir the mixture ...

304 ELEMENTS OF GROUP V of bromine. In both cases the reaction is very vigorous, and con- siderable caution must be exercised in ...

CRYSTALLIZED ARSENIC ACID 305 of the flask and the sides of the bottle offer sufficient cooling sur- face to condense all the va ...

306 ELEMENTS OF GROUP V formula (H 3 AsO4) 2 -H 2 O. This liquid when cooled to 35.5°, or below, can be crystallized to a solid ...

CRYSTALLIZED ARSENIC ACID 307 in a small casserole until the temperature has risen to 115°. Then transfer the liquid to a very n ...

308 ELEMENTS OF GROUP V PREPARATION 56 ANTIMONY TRICHLORIDE FROM STIBNITE, SbCl 3 (BY-PRODUCT: ANTIMONY OXYCHLORIDE) Native anti ...

ANTIMONY TRICHLORIDE 309 Procedure: Treat the powdered stibnite in an 8-inch dish at the hood with the commercial hydrochloric a ...