COBALT CHLORIDE AND ALUMINIUM CHLORIDE. 



205 



COBALT CHLORIDE AND ALUMINIUM CHLORIDE. [See plates 11 (6) and 12.] 



The concentrations of the aluminium chloride in solutions corresponding 

 to plate 11 (6) were 0.000, 1.118, 1.394, 1.676, 1.781, 1.887, 2.100, and 2.459. 

 The increments of concentration were 1.118, 0.276, 0.282, 0.105, 0.106, 0.213, 

 0.359. The concentration of the cobalt chloride throughout was 0.271. 



o.\z 



0.11 



o.io 



0.09 



0.08 



- 0.07 



o 



0.06 



c 

 o 

 O 



0.05 



0.04 



0.03 



0.02 



0.01 



CoC 



+ 



0.5 1. 1.5 Z.O 2.5 3.0 



Concentration 

 FIG. 73. 



3.5 



4.0 



4.5 



The concentration of the mother-solution of aluminium chloride was 2.75. 

 The solutions made up from this mother-solution, and containing cobalt 

 chloride, had colors similar to those of solutions in which either the bromide 

 or chloride of calcium was present, namely, all shades from red to intense 



