50 



Mr. V. H. Veley. The Conditions of the [June 2, 



Series XXXI. 



Volume of solution = 100 c.c. Temperature, 31'l. 

 Ratio of nitrous to nitric acid = 1 : 10'34. 



Percentage loss after 270' 



in series 58-05 Logarithm 1-76385 



Do. do. .. 40-40 .... 1-60655 



Loerarithmic difference 1 ~ n -. ro 



farl' / 



This difference is practically identical with those given above, 

 though the masses of nitric and nitrous acids present were twice as 

 great in the latter as in the former series of experiments. 



Nitrous Acid from Nitrogen Peroxide and Water. 

 About 12 c.c. of nitrogen peroxide were slowly added to 50 c.c. 

 of water, the liquid being kept continually stirred ; after the mixture 

 had become uniform the volume was made up to 100 c.c. as before. 

 By this means a dilute solution of nitrous and nitric acids was ob- 

 tained. The method of experiment was conducted as usual. 



Series XXXII. 

 Temperature, 21'8. 



Nitrous acid present after complete admixture = 1*0663 grams. 

 Nitric acio> = 2-3544 grams. 



Ratio of nitrous to nitric acid = 1 : 2*12. 



