42 



Dr. G. Gore on a Method of Measuring 

 Table XV. [continued). 



Ingredients. 



E.M.F. 



Mixture. E.M.F. 



Calculated 

 E.M.F. 



Change of 

 E.M.F. 



Per 



cent. 



NaCl. 



•99586 



2Na01 + CaClo. -97298 

 „ + SrCl 2 . -97298 

 „ +BaCl 2 . -9787 



•9791 

 •9778 

 •9812 



Loss -006 

 „ -0048 

 „ -0025 



= -61 

 •49 

 •25 





2NaCl4-MgCl 2 . -9787 

 „ +ZnCl 2 . -9787 

 „ 4-CdC] 2 . -97584 



•9830 

 •9804 

 •9766 



Loss -0043 

 „ -0017 

 „ -0008 



= -43 

 •17 



•08 





2NaCl+MgSO r -9787 

 „ +ZnSOj. -98156 

 „ -f-CdSO^. -98442 



•9785 

 •9826 

 •9848 



Cain -0002 

 Loss -001 

 „ -0004 



= -02 

 •10 

 04 



Na 2 S0 4 . 

 AmCl. 



•9930 

 •90148 



Na 2 S0 4 +2KCl. -98442 

 ., 4-2NaCl. -9930 

 „ 4-2AmCl. -9501 



•9855 

 •9942 

 •9536 



Loss -0011 

 „ -0012 

 „ -0025 



= -11 

 •12 

 •36 





Na 2 S0 4 +MgS0 4 . -97584 

 „ + ZnS0 4 . -97870 

 „ + CdSO,. -98156 



•9785 

 •9823 

 •9845 



Loss -0027 

 „ -0036 

 „ -0029 



= -27 

 •36 

 •29 



Na 4 P 2 Cy 



•8214 



4KCl+Na 4 P 2 7 . -89862 



•9039 



Loss -00528 



= -58 



K 2 C0 3 . 



Na 2 C6 3 . 



•78994 

 •75848 



K 2 C0 3 -f Na 2 C0 3 . -77564 



•7762 



Loss -0005 



= -064 



KHO. 



•8843 



KHO+KCl. -9072 



•9417 



Loss -0345 



= 3-67 



Influence of Temperature. 



The mixture Na 2 S0 4 + 2KCl in the above table was re- 

 examined with each of the three solutions at about 98° C. 

 The electromotive force of the KC1 solution was '9501, of the 

 Na 2 S0 4 "9644 ; and of the mixture of the two -95382 ; the 

 calculated electromotive force of the latter was '9570, and 

 the loss '00348 or '363 per cent. The rise of temperature 

 therefore, whilst diminishing somewhat the electromotive force 

 of each of the three liquids, had very little effect upon the 

 percentage of loss in this case. 



Table XVI. — Positive metal, Zinc. 



Strength of Solution 1 equivalent weight in grains in 31,000 

 grains of water. 



Ingredients. E.M.F. 



KOI. 

 KNO,. 



1-295 



1-14988 



Mixture. 



E.M.F. 



KC14-KK0 3 . 1-1413 



Calculated 

 E.M.F. 



1-2116 



Change of 

 E.M.F. 



Per 



cent. 



Loss -0703 



5-82 



