The NO produced in the first step then reacts with oxygen to produce nitrogen dioxide, NO₂ according to the equation below.
[tex]2 NO + O^{2} -\ \textgreater \ 2 NO^{2}[/tex]
(count the "2" after oxygen and the "2" after nitrogen dioxide as subscripts.)
State with a reason which substance is oxidized and reduced shown in this equation.
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