GK
CHEMISTRY
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Question
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Detailed explanation-1: -Oxides of nitrogen are a mixture of gases that are composed of nitrogen and oxygen. Two of the most toxicologically significant compounds are nitric oxide (NO) and nitrogen dioxide (NO2). Other gases belonging to this group are nitrogen monoxide (or nitrous oxide, N2O), and nitrogen pentoxide (NO5).
Detailed explanation-2: -Nitrogen dioxide is formed due to the oxidation of nitrogen oxides in the presence of oxygen. Although NO2 does not poison the catalyst itself, it has a negative influence on the ionomer and the ionomer-catalyst boundaries.
Detailed explanation-3: -The key difference between nitrite and nitrogen dioxide is that the nitrite is an anion whereas the nitrogen dioxide is a molecule. Both nitrite and nitrogen dioxide has the same number of nitrogen and oxygen atoms; one nitrogen atom and two oxygen atoms. Even the structure of the compound is similar.