95 



6 Atomer, og al Kaliumchlorat, som ogsaa indeholdt 6 At. Ilt, var en Forbindelse 

 af C/ -I- Å'Og ')• Senere, da han havde opdaget Euchlorine, mente han, al denne 

 Luftart ,,is probably combined with the peroxide of potassium in the hyper- 

 oxymuriate"-'). Gay-Lussac imødegik disse Ideer ved at fremstille Chlorsyren i 

 vandig Opløsning-^) og sluttede, at Kaliumchlorat var sammensat aldeles analogt 

 med de andre Iltsyresalte af en Syre ClO^^ og en Base KO. Men Dayy hævdede 

 bestandig, at de chlorsure og jodsure Salte vare ,.trip]e compounds", og at de for- 

 holdt sig ganske anderledes end alle andre Iltsyresalte. De mistede ved Ophedning 

 6 At. Ilt og bevarede ikke desto mindre deres neutrale Karakter uforandret. Han 

 fremstillede Jodsyreanhydrid (af Euchlorine og Jod), paaviste, at det dannede 

 krystallinske Forbindelser med flere Syrer og udtalte sig sluttelig saaledes derom : 

 „I am desirous of marking the acid character of oxyiodine [Jodsyreanhydrid] combined 

 with water, without applying the name acid for the anhydrous solid. It is not at 

 all improbable that the action of the hydrogen in the combined water is connected 

 with the acid properties of the compound; for this acid may be regarded as a triple 

 combination of iodine, hydrogen, and oxygen, an oxyiode (Jodat) of hydrogen, and 

 it is possible that the hydrogen may act the same part in giving character, that 

 potassium sodium, or the metallic bases perform in the oxyiodes (Jodaterne); and 

 as hydrogen combined with iodine forms a very strong acid, and as this acid 

 would remain, supposing all the oxygen to be taken away from the oxyiodic acid 

 (Jodsyre) it is a fair supposition that the elements must have an influence in 

 producing the acidity of the substances"^). — Faa Dage efter opdagede Davy Chlor- 

 overilte ClO^') og fandt, at denne Forbindelse, skjøndt den indeholdt 4 At. Ilt, ikke 

 var en Syre. Det blev derfor meget sandsynligt, at Gay-Lussac's Chlorsyre „owes its 

 acid powers lo combined hydrogen", og at den er analog med de andre 

 chlorsure Salte, som ere ,.triple compounds of inflammable bases, chlorine and 

 oxygen". Men endnu tydeligere præciserer han sine Anskuelser saaledes: „Till a pure 

 combination of chlorine and oxygen is obtained, possessed of acid properties, we 

 have no right to say that chlorine is capable of being acidifyed by oxygen, and 

 that an acid compound exists in the hyperoxymuriates". Vi vide med Sikkerhed, 

 at Chlor kan omdannes til en Syre ved Brint, „and when this principle exists, its 

 energies ought not be overlooked — and all the new facts confirm, that acidity does 

 not depend upon a peculiar elementary substance, but upon peculiar com- 

 binations of various substances"''). Davy forkaster altsaa bestemt „principium 

 aciditatis" i Form af bestemte Stoffer, men han gaaer endnu videre, han bryder med 

 Dualismen og erklærer de chlor- og jodsure Salte for ternære Forbindelser. Dette 



') Pliil Trans. 1811 (Works 5, 3301. 



-) Ib. 1811 (Worlis 5, 3561. 



3) Ann. chim. 91, 105 ff. (1814). 



*) Af et Brev, dat. Rom, 10. Febr. 1815; Pliil. Trans. 1815, S. 212 (Worlis 5, 512). 



^) Sml. S. 85, Note 7. 



'■) Af et Brev fra Rom, dat. 15. Febr. 1815; Phil. Trans. 1815, S. 218 (Works 5, 507-508). 



