RAMAN-SPECTROSCOPIC STUDY OF NITRONIUM ION FORMATION IN MIXTURES OF NITRIC-ACID, SULFURIC-ACID AND WATER

被引：18

作者：

EDWARDS, HGM

TURNER, JMC

FAWCETT, V

机构：

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1995年 / 91卷 / 10期

关键词：

D O I：

10.1039/ft9959101439

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Quantitative Raman spectroscopic measurements of the intensity of the v(NO) symmetric stretching band of NO2+ in aqueous solutions of nitric and sulfuric acid mixtures have been carried out over the temperature range 293-313 K. From the spectroscopic data it was found that the NO2+ species concentration decreased with an increase in temperature. Equilibrium constants for the reaction HNO3 + 2H(2)SO(4) reversible arrow NO2+ + H3O+ + 2HSO(4)(-) were determined at 293 and 313 K and the average enthalpy of NO2+ formation was found to be Delta H = -25 + 5 kJ mol(-1).

引用

页码：1439 / 1443

页数：5

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