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  4. NO2 (brown colour gas) exists in equilibrium with N2O4 (colourless gas) as gjlven by chemical equation. underset(brown) mathop2NO2 underset(colourless) mathopN2O4 Mixture is slightly brown due to existence of NO2 . If pressure is increased

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Q. $ N{{O}_{2}} $ (brown colour gas) exists in equilibrium with $ {{N}_{2}}{{O}_{4}} $ (colourless gas) as gjlven by chemical equation. $ \underset{(brown)}{\mathop{2N{{O}_{2}}}}\,\underset{(colourless)}{\mathop{{{N}_{2}}{{O}_{4}}}}\, $ Mixture is slightly brown due to existence of $ N{{O}_{2}} $ . If pressure is increased

MGIMS WardhaMGIMS Wardha 2013

Solution:

By Le-Chateliers principle, due to increase in pressure, equilibrium shifts in the direction of low pressure (in which number of mole decreases) i.e., forward side.