Kinetic study of the autocatalytic nitric acid-bromide reaction and its reverse, the nitrous acid-bromine reaction

1989 ◽  
Vol 93 (7) ◽  
pp. 2801-2807 ◽  
Author(s):  
Istvan Lengyel ◽  
Istvan Nagy ◽  
Gyorgy Bazsa
Keyword(s):  
Nitric Acid ◽  
Kinetic Study ◽  
Nitrous Acid

scholarly journals IX. The electric conductivity of nitric acid

1898 ◽  
Vol 191 ◽  
pp. 365-398 ◽  
Keyword(s):  
Nitric Acid ◽  
Physical Properties ◽  
Nitrous Acid ◽  
Internal Resistance ◽  
The Other ◽  
Reasonable Degree ◽  
Mineral Acids ◽  
Artificial Illumination ◽  
The Subject ◽  
Deep Green

Of the commoner mineral acids the chemical changes of Nitric Acid, from their evident complexity, have formed the subject of numerous memoirs, while those of sulphuric acid, from their assumed simplicity, have been to some degree neglected; on the other hand, the physical properties of the latter have been studied with considerable elaboration, while those of the former have been passed over, doubtless on account of the corrosive nature of the acid and the difficulty of preparing and preserving it in a reasonable degree of purity. Further, with certain exceptions, the alterations in physical properties induced by the products of reduction, be they nitrogen peroxide or nitrous acid, either singly or conjointly, have attracted but little attention, though it is a common matter of observation that the current intensity of a Grove’s or other cell containing nitric acid remains constant, even though the fuming acid, originally colourless or red, has become of a deep green tint. It is more than probable that of the factors of Ohm’s law, both the E. M. F. and internal resistance are continually varying. At the earliest stages of the enquiry it was found that the passage of a few bubbles of nitric oxide gas into a considerable volume of nitric acid produced an alteration of one percent, in the resistance, and the same result could be effected to a less degree by exposure to sunlight, and to a still less degree by exposure to artificial illumination. Therefore, we determined to investigate the alterations of conductivity produced by changes of concentration and temperature in samples of acid purified with necessary precautions, more especially as former workers upon the subject have either used samples of acid confessedly impure, or have been silent as to any method of purification, or have adopted no special care in dealing with a substance so susceptible of polarisation.

Kinetic study for the oxidation of cyclohexanol and cyclohexanone with nitric acid to adipic acid

2020 ◽  
Author(s):  
Detao Pan ◽  
Guangxiao Li ◽  
Yuanhai Su ◽  
Huilong Wei ◽  
Zhenghong Luo
Keyword(s):  
Nitric Acid ◽  
Kinetic Study ◽  
Adipic Acid

A kinetic study of phenol nitration and nitrosation with nitrous acid in the dark

2004 ◽  
Vol 2 (3) ◽  
pp. 135-139 ◽  
Author(s):  
Davide Vione ◽  
Simone Belmondo ◽  
Lorenzo Carnino
Keyword(s):  
Kinetic Study ◽  
Nitrous Acid

Coupling between the Tropospheric Photochemistry of Nitrous Acid (HONO) and Nitric Acid (HNO3)

2006 ◽  
Vol 3 (1) ◽  
pp. 31 ◽  
Author(s):  
Kevin C. Clemitshaw
Keyword(s):  
Nitric Acid ◽  
Hydroxyl Radicals ◽  
Nitrous Acid ◽  
Snow Pack ◽  
Rural And Remote ◽  
Sources And Sinks ◽  
Tropospheric Photochemistry ◽  
Recent Developments ◽  
Urban Rural ◽  
And Migration

Environmental Context.Nitrous acid (HONO) is formed in the troposphere in urban, rural and remote environments via several uncertain heterogeneous and photochemical processes that involve nitric acid (HNO3). A recently recognised process is initiated by the deposition and migration of HNO3 within snow-pack surfaces to form nitrate anions (NO3−). Photo-reduction of NO3− followed by acidification of the nitrite (NO2−) photo-product leads to emissions of gas-phase HONO. Seasonal observations at Halley, Antarctica are consistent with the formation of HONO via this process, which is potentially of global significance because much of the Earth’s land (and sea) surface is covered with snow and is sunlit for much of the year. Both HONO and HNO3 significantly influence the production of ozone (O3), which acts as a greenhouse gas in the troposphere, via their respective roles as a source of hydroxyl radicals (OH•) and as a sink for OH• and nitrogen dioxide (NO2). Abstract.The tropospheric photochemistry of nitrous acid (HONO) and its coupling with that of nitric acid (HNO3) in urban, rural and remote atmospheres are highlighted in terms of established and uncertain homogeneous and heterogeneous sources and sinks, together with known and potential effects and impacts. Observations made at Halley, Antarctica, via optical detection of an azo dye derivative of HONO are consistent with snow-pack photochemical production of HONO, which has potential significance for the production of hydroxyl radicals (OH•) and ozone (O3) on regional and global scales. Recent developments in measurement methods for HONO and HNO3 are also highlighted. It is now timely to conduct a formal intercomparison of the methods in order to evaluate and enhance their capabilities, and to validate the growing body of HONO and HNO3 data obtained in urban, rural and remote locations.

scholarly journals Kinetic Study of the Corrosion Behavior on Polyamide under Nitric Acid Solution

2012 ◽  
Vol 61 (6) ◽  
pp. 537-542
Author(s):  
Takehiro HAMAMURA ◽  
Masatoshi KUBOUSCHI ◽  
Saiko AOKI ◽  
Osamu YOSHIDA ◽  
Mitsuhiko EJIMA ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Acid Solution ◽  
Kinetic Study ◽  
Corrosion Behavior ◽  
Nitric Acid Solution

Can nitrous acid contribute to atmospheric new particle formation from nitric acid and water?

2020 ◽  
Vol 44 (36) ◽  
pp. 15625-15635
Author(s):  
Shuang Ni ◽  
Feng-Yang Bai ◽  
Xiu-Mei Pan
Keyword(s):  
Optical Properties ◽  
Nitric Acid ◽  
Temperature Dependence ◽  
Nitrous Acid ◽  
Intermolecular Forces ◽  
Particle Formation ◽  
New Particle Formation

The properties of (HNO3)(HONO)(H2O)n (n = 1–6) clusters are reported including thermodynamics, structures, temperature-dependence, intermolecular forces, optical properties, and evaporation rates.

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