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Nitrogen sesquoxide `(N_(2)O_(3))`canbe obtained by cooling (below`-30^(@)C`)an equimolar mixture ofA. `N_(2)O` and `NO_(2)` gasesB. `N_(2)O` and `NO` gasesC. `NO` and `NO_(2)` gasesD. `N_(2)O` and `N_(2)O_(4)` gases |
Answer» Correct Answer - 3 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)):}` |
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