Nitrogen sesquoxide `(N_(2)O_(3))`canbe obtained by cooling (below`-30^(@)C`)an equimolar mixture of

Options

A. `N_(2)O` and `NO_(2)` gases
B. `N_(2)O` and `NO` gases
C. `NO` and `NO_(2)` gases
D. `N_(2)O` and `N_(2)O_(4)` gases

Answer

3

Explanation

Dinitrogen trioxide ,th eleast stable of the common oxides of nitrogen ,is a dark blue liquid that decomposes above `230^(@)C`
it is prepared by colling a stoichimetric mixture of nitrogen monoxide and nitrogen dioxide:
`NO(g)+NO_(2)(g) hArr N_(2)O_(3) (l)`
It is known inpure state in solid state at very low temperature. In the vapour state,it is present as an equivalent mixture of `NO` and `NO_(2)`.
The mixture of `NO` and `NO_(2)` can be obtained by the action of `6N` nitric acid on copper:
`2Cu+6HNO_(3)rarr2Cu(NO_(3))_(2)+ubrace(NO+NO_(2))_(N_(2)O_(2))+3H_(2)O`
`N_(2)O_(3)` is alos obtained by the reduction of nitric acid with arsenious oxide:
`{:(2KNO_(3)+H_(2)O_(4) rarr K_(2)SO_(4)+2HNO_(3)),(2HNO_(3) rarr H_(2)O+2NO+3O),([2FeSO_(4)+H_(2)SO_(4) +O rarr Fe_(2)(SO_(4))_(3)+H_(2)O]xx3),(bar(2KNO_(3)+6FeSO_(4)+4H_(2)SO_(4) rarr K_(2)SO_(4)+3Fe_(2)+(SO_(4))_(3)+2NO+4H_(2)O)):}`