The kinetics of oxidatio~reduction reaction between N,N-diethylhydroxylamine (DEHAN) and nitrous acid in nitric acid solution have been studied by spectrophotometry at 9.5 ~ The rate equation is d[HNO2]/dt K [HNO2]. [DEHAN] [HNO3] and the rate constant K 12.81 (mol/1) 2.mi n 1. A possible mechanism has been suggested on the basis of chemical analysis and Raman spectra. The activation energy E and the thermodynamic functions AH #, AG # and AS "# are also calculated.
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