80 HYPONITKITES ; PEOPEKTIES AND PREPARATION BY 



for potassium (liYjDo)nitrososulpliate lias been shown by Haga 

 and me to have nothing favouring its preference to that of 

 KON.N.O.SO3K, which has so much to be said for it. 



Analogy of hyponilriics to carbonates and of K, to CO, — In 

 hardly forming salts with the feebler metal-radicals, such as 

 aluminium and ferricura ; in decomposing readily into anhydride 

 and water ; and in having its soluble normal salts with very 

 alkaline reaction, hyponitrous acid resembles carbonic acid, as 

 was indicated in my first paper. Zorn, also, in one of his 

 papers, dwells on the analogy of the one acid to the other, 

 pointing out that the salts have the same molecular magnitude, 

 since K. and CO are both 28. 



As is well-known, the physical properties of nitrogen and 

 carbon monoxide are throughout almost identical. The radicals, 

 carbonyl and di-nitrogen, also, are both bivalent, and occur 

 combined with oxylic, imidic, and alkyl radicals. Thus, C0(0Na)2 

 and COONa(OH) find their analogues in No(ONa), and KOXa(OH). 

 Just as ferric oxalate, Fe,(CA0,)3 becomes Feo(CA02)2 + 2COO, 

 so HgJKOJo becomes Hgo(NA) +^N0. COO corresponds with 

 NoO ; also COiNAg to KiISTAg. Lastly, ketonic compounds are 

 perhaj)s represented by azo compounds. 



