Atomic Volume and Specific Gravity. 499 



In the second class (Table IX. a.) the primitive volume is 

 9*8, or, as in the case of the double chlorides of tin, the me- 

 tallic salt enters into combination with the volume 1 1 ; while 

 NH4CI remains a multiple of 9*8. It is interesting to ob- 

 serve that NH4CI affects in combination as a solid the same 

 number of volumes which it has as a liquid. 



Table IX. a. — Showing the Volumes in solution and in the 

 ' solid state of certain Chlorides. 



Designation. 



4a- 



Vol. in solution. 



Volume of salt. 



Name. 



iUf 



f. 



Chloride of potassium 



Chloride of sodium 



Chloride of barium . . 

 Chloride of copper \ 



and potassium J 



Chloride of copper 1 



and ammonium ...j 

 Chloride of tin and"! 



ammonium J 



Chloride of tin and"! 



potassium J 



A. Chloride of mer-"l 

 curyandammoniura j 



B. Chloride of mer- \ 

 cury and ammonium J 



Chloride of mercury "1 

 and potassium J 



^i 



n 



!?m3fe 



•^i^< 





> s 



is 



■a a 

 °x 



V S 



S P< 



3 X 









^& 



KCl 



NaCl 

 BaCl+2110 



CuCl+KCl+2H0 



CuCl + NH^Cl 



+2H0 

 SnCl + NH4Cl 



+3H0 



SnCl+KCl+3H0 

 IIgC14-NH4Cn 



+H0 ; 



2IIgCH-NH4Cn 



+H0 / 



2HgCl + KCl 1 



+ 2H0 J 



74-7 



58-78 

 122-83 



159-88 



138'84 



175-05 



196-09 



199-8 



336-4 



366-5 



26-8 

 18-3 



27-8 



530 

 61-8 

 731 

 63-6 

 64-4 

 81-2 

 80 



39-3 

 29-2 

 3907 



65-9 

 68-8 

 83-2 

 78-0 



98-1 



39-2 

 29-4 

 39-2 



686 

 68-6 

 83-2 



78-4 

 68-6 

 88-2 

 98-0 



1-905 

 2-000 

 3-133 



2-331 

 2-024 

 2-104 

 2-501 

 2-912 

 3-814 

 3-739 



1-900 

 2-011 

 3144 



2-426 

 2018 

 2104 

 2-514 

 2-938 

 3-822 

 3-736 



The results of the experiments detailed in this section afford 

 strong proofs of the law of multiple proportions, and exhibit 

 at the same time that remarkable alteration of the divisor of 

 the solid volumes which we have already noticed so frequently. 

 Thus, while many of the chlorides and bromides are multi- 

 ples of 11, we have decided exceptions in chlorides of potas- 

 sium and sodium, which possess for their divisor the volume 

 of ice, viz. 9"8 ; and this reappears in the double salts. , 'jj,|',^^ 



It is impossible, however, not to see that these results are 

 somewhat singular, for in the double salts the chloride of 

 potassium forces the double salt with which it is associated 

 to assume the multiples of 9'8, and then exhibits its natural 

 isomorphous relation to chloride of ammonium, which per se 

 it did not possess. Chloride of ammonium, anomalous, in 

 being a multiple of 1 1 in the solid state, assumes four volumes>n 



