COPPER CHLORIDE AND ALUMINIUM CHLORIDE. 



223 



The electrical conductivities, together with the corresponding concentra- 

 tions of the solution containing copper chloride and aluminium chloride, are 

 given in table 113. The numbers in the second and fourth columns are 

 expressed in reciprocal ohms and reciprocal centimeters. 



The data of table 113 are shown graphically by fig. 76. The abscissae 

 denote concentrations of aluminium chloride, and the ordinates give the 



0.07 



0.06 



0.05 



0.04 



u 



D 

 T> 



C 



o 

 O 



0.03O 



0.02 



0.01 



CuCI 2 + AICI 3 



0.5 l.O 1.5 2.0 2.5 



C concentration 



FIG. 76. 



corresponding conductivities of the solution. This curve has a marked 

 maximum like all the four preceding curves. Moreover, the concentration 

 associated with the maximum of conductivity in question has the value 1.1, 

 and thisjs exactly the same value as was found for the corresponding point 

 of the curve pertaining to the solutions which contained cobalt chloride and 

 aluininium'chloride. 



