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The Stability of Nitric Oxide in Acid Solutions

✍ Scribed by Gabi Gabor

Publisher: Elsevier Science
Year: 1997
Tongue: English
Weight: 84 KB
Volume: 56
Category: Article
ISSN: 0026-265X
DOI: 10.1006/mchj.1996.1446

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✦ Synopsis

Aqueous acid solutions of nitric oxide (NO) are used as a source for this species in chemical and biological experiments. To utilize known quantities of NO, it is necessary to determine the escape rate of NO from these solutions. Escape rates at constant temperature are concentration dependent. The rate constants at 25ЊC are 3.26 1 10 06 , 2.7 1 10 07 , and 1.44 1 10 07 min 01 for 0.2, 0.01, and 0.001 mol/L solutions, respectively. The escape rates are further reduced upon lowering the temperature. The half times of escape from 0.2 and 0.01 mol/L solutions are 18 and 280 min at 25ЊC but 350 and 490 min at 0ЊC, respectively.

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