ON THE BOILING POINTS OF AQUEOUS SOLUTIONS OF ELECTROLYTES. 225 



the boiling point also increases more quickly than percentage composition, each set of 

 curves being concave towards the elevation axis, whereas the straightness of those 

 on page 222 show that the amount of salt, added to a constant amount of water and 

 elevation of the boiling point, increase as a rule fairly proportionately even to high 

 concentrations. 



When curves are drawn with elevation per gramme equivalent as ordinates and 

 gramme equivalents per litre as abscissae, these curves exhibit a # minimum point. 

 Those given on page 226 have been drawn from the following data (fig. 15). 



Ammonium 



Iodide. 



Ammonium '. 



3romide. 



C 



ADMIUM 



Iodide. 



Gnu. eqs. 

 per Litre. 



Elevation 



of Boiling 



Point. 



Elev. per Grm. eq. 



Grm. eqs. 

 per Litre. 



Elevation 



of Boiling 



Point. 



Elev. per Grm. eq. 



Grm. eqs. 

 per Litre. 



Elevation 



of Boiling 



Point. 



Elev. per Grm. eq. 



•260 



•290 



Ml 



•368 



•275 



•74 



•232 



•077 



•33 



•775 



•790 



101 



•749 



•542 



•72 



•413 



•131 



•317 



1-220 



1-250 



1-02 



1-09 



•814 



•74 



•655 



•191 



•291 



1-624 



1-760 



1-08 



1-42 



1-076 



•75 



•855 



•243 



•285 



2-055 



2-335 



1-13 



1-74 



1-345 



•77 



1-155 



•308 



•266 



2-446 



2-846 



1-16 



2-04 



1-596 



•78 



1-350 



■381 



•282 



2-805 



3-392 



1-20 



2-29 



1-871 



•81 



1-580 



•461 



•290 



I 3-140 



3-870 



1-23 



334 



2-968 



•88 



1-838 



■556 



•302 



3-458 



4-374 



1-26 



3-77 



3-511 



•93 



2-388 



•725 



•303 



3-779 



4-950 



1-30 



4'41 



4-431 



1-00 



2-625 



•824 



•313 



4-714 



7-664 



1-62 



4-83 



5-003 



1-03 



2-859 



•925 



•322 



5-83 



9-568 



1-64 



5-53 



6-224 



1-12 



3-101 



1-022 



•329 



5-97 



10-154 



1-76 



5-81 



6-654 



1-14 









Lithium Bromide. 



Lithium Chloride. 



Lithium Nitrate. 



Gnu. eqs. 

 per Litre. 



•262 



Elevation 





i Grm. eqs. 

 per Litre. 



1 



•250 



Elevation 







Elevation 





of Boiling 

 Point. 



Elev. per Grm. eq. 



of Boiling 

 Point. 



Elev. per Grm. eq. 



Grm. eqs. 

 per Litre. 



ofBoiling 

 Point. 



Elev. per Grm. eq. 



•274 



1-04 



•231 



■92 



•312 



•264 



■84 



•584 



■532 



•91 



i -922 



•743 



•80 



1-215 



•841 



•70 



1-051 



1-085 



1-03 



•158 



1-592 



1-04 



2-025 



1-516 



•75 



1-260 



1-428 



1-13 



2-23 



2-547 



1-14 



2-788 



2-241 



•81 



1-549 



1-798 



1-16 



2-87 



3-438 



1-19 



3-371 



2-918 



•86 



2-243 



2-695 



1-20 



! 3-60 



4-649 



1-29 



4-118 



3-921 



•95 



2-945 



3-741 



1-27 



, 4-25 



6017 



1-41 



4-62 



4-428 



•96 



3-286 



4-359 



1-33 



4-70 



7-542 



1-60 



5-39 



6-160 



1-14 



3-94 



5-765 



1-46 



5-31 



9-294 



1-75 



5-98 



7-200 



1-20 



4-48 



7-421 



1-65 



5-98 



11-419 



1-90 



6-52 



8-496 



1-28 



Curves are given (fig. 16) for which m v //"°° where m v represents equivalent con- 

 ductivity at dilution v and m«o represents that at infinite dilution, has been plotted 

 against the value obtained at v for the boiling-point elevation constant. These 



* See page 226. 

 TRANS. ROY. SOC. EDIN., VOL. XLV. PART I. (NO. 8). 31 



