68 



Conductivities and Viscosities in Pure and in Mixed Solvents. 



TABLE 42. 



The concentrations of the mother solutions used in the preparation 

 of the solutions for the following series of measurements were the same 

 as those employed for table 39. The results are recorded in tables 43 

 and 44. 



SOLUTIONS. 



I. 75 c.c. phenolphthalein, 0.5 c.c. NH 4 OH, 0.5 c.c. NH 4 C1, diluted to 100 c.c. 

 II. 75 c.c. phenolphthalein, 0.5 c.c. NH 4 OH, 1 c.c. NH 4 C1, diluted to 100 c.c. 



III. 75 c.c. phenolphthalein, 0.5 c.c. NH 4 OH, 2 c.c. NH 4 C1, diluted to 100 c.c. 



IV. 75 c.c. phenolphthalein, 0.8 c.c. N NaOH, diluted to 100 c.c. 



TABLE 43. 



[I/Io for depth of solution =20 mm. Temperature =20.] 



TABLE 44. 



