304 Mr. G. Gore. Chemical Energy of Electrolytes [June 14, 



Table YIII.— "Ditto at 19° C. 



Grains. 



Volts. 



G-rains. 



Volts. 



Grains. 



Volts. 



3-0 



1-0497 



1-68 



1 -0669 



0-36 



1 -0697 



2-67 



1 -0583 



1-35 



1 -0583 



0-03 



1 -0716 



2-34 



1 -0697 



1-02 



1 -0697 



0-027 



1 -0812 



2-01 



1-0726 



0-69 



95 



water 





The great solubility of the salt rendered several groups of measure- 

 ments necessary in order to include the entire range of solution. The 

 salt was odourless and colourless, but slightly alkaline. The smallest 

 proportion of the iodide necessary to change the balance lay between 

 1 in 15,500 and 17,222 parts of water. The variation of electro- 

 motive force with strength of solution was very irregular. The 

 greatest electromotive force was with a solution containing from 

 680 to 700 grains of the salt. 



Table IX.— KBr in 465 grains of Water at 12'5° C. 



G-rains. 



Volts. 



1 



Grains. 



Volts. 



G-rains. 



Volts. 



273 



1 -1442 



153 



1 -2457 



33 



1-230 



243 



1 -1771 



123 



1 2314 



3 



1 -23i7 



213 



1-2314 



93 



1-1485 







183 



1 -2171 



63 



1-230 







The salt was well crystallised, dry, odourless, and neutral to test- 

 paper. The strongest solution of it was a saturated one. 



Table X.— Ditto at 9° C. 



Grains. 



Volts. 



Grains. 



Volts. 



Grains. 



Volts. 



0-03 

 0-02667 

 -02334 

 0-02001 



1 -2872 

 1 -2729 

 1 -2529 

 1 2443 



0-01668 

 -01335 

 -01001 

 -00669 



1 -2443 

 1-3015 

 1-2872 

 1-1871 



-00336 

 water 



1-087 







Six different strengths of solution, each weaker than 0"0036, gave 

 the same electromotive force as water. The smallest proportion of 

 the salt which upset the balance lay between 1 part in 66,428 and 

 67,391 parts of water. 



