
TY  - JOUR
A1  - Bayliss, NS 
A1  - Watts, DW 
T1  - The Spectrophotometry of Nitrate Solutions in Aqueous Sulphuric Acid
JF  - Australian Journal of Chemistry
JO  - Aust. J. Chem.
Y1  - 1963
VL  - 16
IS  - 6
SP  - 943
EP  - 946
KW  - 
UR  - https://doi.org/10.1071/CH9630943 
N2  - The ultraviolet spectra of solutions of potassium nitrate in aqueous sulphuric acid have been studied. Three absorptions, those due to the species NO3-, HNO3, and NO2+, have been found. From this study a semiquantitative picture has been developed of the distribution of the total nitrate between these three species. It was found that in the sulphuric acid concentration range 0-15% by weight, the dissolved nitrate existed as nitrate ion and that from 15-70% sulphuric acid, nitrate ion, and molecular nitric acid were present in comparable amounts. In the sulphuric acid concentration range 72-82% nitric acid accounted for the total dissolved nitrate and as the sulphuric acid concentration was increased from 82-90% nitric acid was converted to nitronium ion. 
ER  -

