f.^? .V Messrs. Pl^yfaij^,<i?^^^^tl^a^^^^^ 



Tapi*J5! VIII. — Showing the volumes occupied by certain Nitrates. 



Designation, . , , 



'■■'■'- .!0Ij;jJ08 li 



Volume in 



Volume in state of salt. 



Name. r FMmula. 



ih) oniitmiYtui ohii n 



Atomic 

 Weight. 





•i. 



s ° 



4) S 



s g- 



8.5" 

 .23 



CO — 



a|- 





•^tj 



E| 



Nitrate of potash ... 

 Nitrate of ammonia 



Nitrate of soda 



Nitrate of silver 



Nitrate of lead 



Nitrate of barytes . . 

 Nitrate of strontia .. 

 Nitrate of black \ 

 oxide of mercury j 

 Basic nitrate of 1 



mercury J, 



Basic nitrate ofO 



lead ji 



Nitrate of bismuth . 

 Nitrate of copper... 

 Nitrate of magnesia 



KO, NOg 

 NII4O, NO5 

 NaO, NO5 

 AgO, NO5 

 PbO, NO5 

 BaO, NOg 

 ;SrO, NO5 



HgjO,N05+2HO 

 2H^,NOs+2HO 



BiO, NOj+SfiO 

 CuO, N0s+3H0 

 MgO, N0s+6H0 



101-3 



80-3 



85-45 



170-0 



165-75 



361 

 45-5 

 26-5 

 27-2 

 25-4 



130-85 270 

 106-0 26-5 



2820 540 



2910 



48-9 

 49-1 

 391 

 39-2 

 38-4 

 39-8 

 39-2 



58-9 

 68-6 



5 



5 

 4 

 4 

 4 



4 

 4 



6/ 



^pM: 



160-33' 



120-8 



128-8 



45 



72-8 



,.;Tr 



%hh 



58-6 

 59-0 



88'0 



49-0 

 49-0 

 39-2 

 39-2 

 39-2 

 39-2 

 39-2 



58-8 

 68-6 



49-0 



58-8 

 58-8 

 88-2 



2-067i2070 

 l-639|l-635 

 2-1802-182 

 4-3364-336 

 4-228;4-316 

 3-3383-284 

 2-7042-704 



4-7964-785 



4-2424-242 



5-66715-645 



2-727I2-736 

 2-054 2047 

 1-4601-464 



It is almost supei-fluous to offer any remarks upon this 

 group of salts, especially as we shall have to consider several 

 of them in a future section. It cannot escape attention, that 

 the nitrates of soda, silver, lead, strontia and barytes possess 

 the same atomic volume, as might have been expected from 

 the isomorphism of several of them. Nitrates of soda and 

 potash do not possess the same atomic volume, and therefore 

 their alleged isomorphism, deduced from the observation by 

 Frankenheim* of microscopic crystals of nitrate of potash 

 similar to those of nitrate of soda, is highly questionable. The 

 principal exception to the volumes of the nitrates now de- 

 scribed being multiples of ice is that of nitrate of lead, which 

 has a volume of 38-4, instead of 39*2 ; but this must be due 

 to the nature of the salt, which comes out as unsatisfectorily 

 ill a state of solution as in the solid state. ''^*^_ ^>^ '>»^^»^^V 

 ' ' .no biTB ^baJatiq 



Section IV. -;5. ^^ n.o.>^, ..,^,,.,.. 



Chlorides, Bromides and Iodides. 



■ Chloride of Potassium, KCl = 74*7. — On dissolving 37*5 

 grains of this salt in 1000 grains of water, the increase was 

 13'3 at a temperature of 5*^° ; a second experiment with the 



* Poggendorff's Ann., vol. xl. p. 447. 



