BY MEANS OF CATALYSTS. — CREIGHTON. 



13 



Table I. 

 Each gram of acid in 10 ccm\ aeetopbenone. Temperature 80' 



d — acid 



1 — acid 



t 



A— X 



k 



t 



A— X 



k 







225,1 









225,1 





60 



210,3 



0,00113 



58 



211,2 



0,00114 



154 



189,5 



0,00112 



180 



183,7 



0,00113 



268 



166,8 



0,00112 



268 



166,6 



0,00112 



455 



136,9 



0,00112 



420 



139,1 



0,00114 



620 



112,8 



0,00111 



1320 



50,7 



0,00113 



1335 



50,9 



0,00111 



1620 



36,1 



0,00113 



1890 



27,6 



0,00111 











Mean 



0,00112 





Mear 



0,00113 



For the d- acid Fajans- fomid k 

 1-acid k = 0.00115. 



0.00114, and for the 



On accoun-t of the relatively high rate of decomposition of 

 bromcamphor-carboxjlic acid in the presence fof bases, solutions 

 of the acid and the base were prepared saparately; on starting 

 an experiment the solution of the acid was placed in the 

 reaction flask, nitrogen bubbled through so as to remove any 

 carbon-dioxide and air from the apparatus, and then 1 ccm. of 

 the solution of base, containing the required amoiuit of the 

 substance, was added to the acid solution in the reaction flask. 

 The two. solutions were thoroughly mixed by shaking and the 

 flask immediately lowered into the thermostat. 



1. The liquid was measured at room temperature. 



2. Fajans, K. : loc. cit. 



