154 



A STUDY OF THE ABSORPTION SPECTRA. 



Plate 71. A. Uranyl Nitrate in Water. ? normal. Depth of cell, 196 mm. Tempera- 

 tures, 9.5, 23, 46, 59, 70, and 79 C. 

 B. Uranyl Nitrate in Water. 1.0 normal. Depth of cell, 3 mm. Tempera- 

 tures, 11, 24.5, 40, 53.5, 67.5, and 82 C. 

 Plate 72. A. Uranyl Bromide in Water, Beer's Law. Depth of cell, 24, 18, 12, 9, 6, 

 4, and 3 mm. Concentrations, 0.16, 0.2, 0.25, 0.33, 0.5, 0.75, and 1.0 

 normal. 

 B. Uranyl Bromide in Water. Depth of cell constant, 3 mm. Concentrations, 

 0.16, 0.2, 0.25, 0.33, 0.5, 0.75, and 1.0 normal. 

 Plate 73. A. Uranyl Sulphate in Water. 1.0 normal. Depth of cell, 3 mm. Tempera- 

 tures, 5, 19, 32, 54, 67, and 84 C. 

 B. Uranyl Sulphate in Water. 0.0156 normal. Depth of cell, 196 mm. Tem- 

 peratures, 6, 19, 36, 51, 67, and 81 C. 

 Plate 74. A. Uranyl Acetate in Water, Beer's Law. Depth of cell, 24, 18, 12, 9, 6, 

 4 and 3 mm. Concentrations, 0.031, 0.042, 0.062, 0.083, 0.125, 0.18, 

 and 0.25 normal. 

 B. Uranyl Acetate in Water. Concentration constant, 0.031 normal. Depth 

 of cell, 3, 4, 6, 9, 12, 18, and 24 mm. 

 Plate 75. A. Uranyl Acetate in Methyl Alcohol, Beer's Law. Concentrations, 0.06, 

 0.07, 0.10, 0.12, 0.16, 0.20, and 0.25 normal. Depth of cell, 24, 

 19, 15, 12, 9.5, 7.5, and 6 mm. 

 B. Depth of cell constant, 6 mm. Concentrations, 0.06, 0.07, 0.10, 0.12, 

 0.16, 0.20, and 0.25 normal. 

 Plate 76. A. Uranyl Chloride in Water. Concentration, 1.0 normal. Depth of cell, 1, 2, 

 4, 18, 16, 32, and 45 mm. 

 B. Uranyl Acetate in Water. 0.25 normal. Depth of cell, 3 mm. Tempera- 

 tures, 5, 19, 32.5, 47.5, 61, 70.5, and 84 C. 

 Plate 77. Uranyl Nitrate in Water. 



A. Effect of adding Acetic Acid on the Uranyl Nitrate bands. 



B. Effect of adding Hydrochloric Acid on the Uranyl Nitrate bands. 

 Plate 78. A. Uranous Bromide in Methyl Alcohol. Depth of cell, 3, 6, 11, and 16 mm. 



B. Uranyl Nitrate in Water to which Hydrobromic Acid is added. 



C. Mixtures of Uranyl Nitrate and Uranyl Sulphate in Water. 



Uranyl Nitrate . . 

 Uranyl Sulphate. 



Strip 1. Strip 2. Strip 3. Strip 4. Strip 5. Strip 6 



Pet. 



100 







Pet. 



80 



20 



Pet. 

 60 

 40 



Pet. 

 40 

 60 



Pet. 

 20 



80 



Pet. 







100 



Plate 79. A. Uranyl Acetate in Water. Depth of cell, 10 mm. Concentration of Uranyl 



Salt, 0.05 normal. Concentration Nitric Acid, 0.0028, 0.0056, 0.0140, 



0.028, 0.140, 0.28, and 0.56 normal. 

 Uranyl Nitrate in Water to which Hydrochloric Acid is added. 

 Uranous Acetate in Water to which Nitric Acid is added. 

 The first four strips give the effect of adding Hydrochloric Acid to a Nitric 



Acid solution of Uranyl Nitrate. The remaining strips represent the 



same effect obtained by using a greater depth of cell. 

 Uranous and Aluminium Chlorides in Water to which Nitric Acid is added. 

 Uranyl Nitrate in Water to which Sulphuric Acid is added. Depth of cell 



15 mm. Concentration of Uranyl Salt, 0.04 normal. 



acid, 1.84, 3.68, 7.36, 14.72, 29.44, 58.88, and 88.32. 

 Uranyl Nitrate to which Acetic Acid is added. 

 Uranyl Nitrate in Water to which Sulphuric Acid is added. 



S mm.; otherwise this is the same as B, Plate 81. 

 Uranyl Nitrate in Water to which Sulphuric Acid is added. 

 Uranyl Nitrate in Water to which Acetic Acid is added. 



Percentage of 



Depth of cell 



