Nitric acid is a nitrogen oxoacid of formula HNO3 in which the nitrogen atom is bonded to a hydroxy group and by equivalent bonds to the remaining two oxygen atoms. It has a role as a protic solvent and a reagent.

Nitric acid is an inorganic compound with the formula H N O 3. It is a highly corrosive mineral acid. [6] . The compound is colorless, but samples tend to acquire a yellow cast over time due to decomposition into oxides of nitrogen. Most commercially available nitric acid has a concentration of 68% in water.

pKa Data Compiled by R. Williams pKa Values INDEX Inorganic 2 Phenazine 24 Phosphates 3 Pyridine 25 Carboxylic acids 4, 8 Pyrazine 26 Aliphatic 4, 8 ... HNO3 28 H3AuO3 13.3, 16.0 78 N H3GaO3 10.32, 11.7 78 2H5+ 77 H H5IO6 3.29, 6.70, 15.0 78 2N2O2 34 (see above!) H2N2O2– 34 H 4V6O17 1.96 78 H2OsO5 34 H 2NSO3H 1.0 80 H2O-1.3 7.99*

此数据由哈佛大学的David Ripin and David Evans收集，包括以下化合物的 pKa 。 Inorganic Acids Alcohols, Oximes, Hydroxamic Acids, and Peroxides

Table of Acids with Ka and pKa Values* CLAS * Compiled from Appendix 5 Chem 1A, B, C Lab Manual and Zumdahl 6th Ed. The pKa values for organic acids can be found in Appendix II of Bruice 5th Ed.

有机酸在水溶液中的解离常数（25oC） Dissociation Constants of Organic Acids in Aqueous Solution（25oC）

May, R.D.; Webster, C.R., Measurements of line positions, intensities, and collisional air-broadening coefficients in the HNO3 7.5-μm band using a computer-controlled tunable diode laser spectrometer, J. Mol. Spectrosc., 1989, 138, 2, 383, https://doi.org/10.1016/0022-2852(89)90006-4.

Values for the negative logarithm of the acid dissociation constant, pKa, of the conjugated acid of amines, diamines and cyclic organic nitrogen compounds, shown together with the molecular structure of the acids.

有机质子和有机水溶剂中有机酸pKa值的测定与玻璃电极的标定 安徽格拉特生物化学 有 限公司年产6万吨 有机酸 及其衍生物项目环境影响报告 表 有机酸 深度提取项目环境影响报告 表

www.scitk.org pKa Table 12.05.2017 pKa Chemical Formula Name –10 HClO 4 Perchloric acid –7 HCl Hydrochloric acid –3.0 H 2 SO 4 Sulfuric acid –1.74 H 3 O + Hydronium –1.37 HNO 3 Nitric acid +1.96 HSO 4