426 Dr. J. H. Long on the 



Favre and Valson as in Grmelin-Kraut *, and represent the 

 heat absorbed, expressed in the customary units, when the 

 molecular weight in grams of the salt in question is dis- 

 solved in excess of water. 



Formula 

 of salt. 



Mole- 

 cular 

 weight. 



Mole- 

 cular 

 volume. 



Mole- 

 cules 

 diffused. 



Mole- 

 cular 

 conducti- 

 vity. 



Heat of solution. 



KC1 



74-6 



38-4 



803 



97 



- 4440 



NH 4 C1 ... 



53-5 



35-2 



689 



95 



- 3880 



NaCl 



68-5 



26-2 



600 



81 



- 1180 



LiOl 



42-5 



20-9 



541 



70 





KBr 



119-1 



45-9 



811 



104 



- 5080 



KH 4 Br ... 



98-0 



42-4 



629 



103 



- 4380 



NaBr 



103-0 



34-2 



509 



81 



- 150 



KI 



1660 

 1500 



55-5 

 43-4 



823 

 672 



103 



84 



- 5110 

 + 1220 



Nal 



KCy 



65-1 



421 



767 



101 



- 2860 



NH 4 N0 3 



80-0 



47-2 



680 



93 



- 6320 



KN0 3 



NaN0 3 ... 



101-1 



48-6 



607 



92 



- 8520 



85-0 



38-4 



524 



76 



- 5060 



IANO3 ... 



69-0 



28-9 



512 







For 











^ molec. 





BaN 2 6 ... 



261-0 



81-6 



656 



69 



- 4640 



SrN 2 6 ... 



211-5 



76-1 



552 





- 2540 



BaCl 2 



208-1 



54-1 



450 



79 



+ 2344 1 (BaCl 2 . 2H O) -4836 



SrCl 2 ...... 



158-5 



55-0 



432 



77 



+ 10966 I (SrCl 2 .6H;0)-7172 



CaCl 2 



111-0 



49-7 



429 



75 



+ 18106 J (Ca01 2 . 6H 2 O) - 3258 



Mg01 2 



950 



43-3 



392 



72 





CoCl 2 



129-8 



44-3 



306 







Ni01 2 



129-8 



50-7 



304 







N 2 H 8 S0 4 



1320 



75-8 



724 



76 



- 1950^ 



Na 2 S0 4 ... 



142-0 



53-7 



678 



63 



-)- 708 | 



MgS0 4 ... 



1200 



45-4 



348 



37 



+20304 ' (MgS0 4 . 7H 2 O)-3720 

 + 18548 f(ZnS0 4 .7H,0)-4148 



ZnS0 4 ... 



161-2 



46-2 



332 



34 



CuS0 4 ... 



159-5 



445 



316 



33 



+ 16298 J (C11SO4 .5H,0)-2432 



MnS0 4 ... 



151-1 



48-8 



298 





+ 14170; (MnS0 4 .5H 2 0)+ 460 



A consideration of the Table shows the completeness of the 

 analogies referred to above. Taking the alkaline chlorides 

 first, it will be seen that they stand in the same order as 

 regards molecular volume, rate of diffusion, conducting- 

 power, and latent heat of solution. Exactly the same is true 

 of the corresponding bromides and iodides; and the cyanide 

 of potassium has very nearly the same rate of diffusion and 

 electrical conducting-power as the chloride, bromide, and 



* Gmelin-Kraut, erster Band, pp. 512-544. 



