A colorless toxic gas formed in many reactions in which nitric acid is reduced, as in reaction with copper. It reacts immediately with oxygen to form nitrogen dioxide.
- In these reactions the ozone reacts with nitric oxide to produce nitrogen dioxide.
- Both nitric oxide and nitrogen dioxide can be toxic at higher concentrations.
- He isolated around twenty different airs, including hydrogen chloride, nitric oxide, and ammonia.
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Syllabification: ni·tric ox·ide
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