Q.

The vapour density of a mixture containing NO2  and  N2O4  is 38.3 at  27C. Calculate the mole of NO2  in 10 mole mixture.

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answer is 3.

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Detailed Solution

Let mole of  NO2=a
 a×46+(10a)×92=38.3×2×10 a=3.35

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The vapour density of a mixture containing NO2  and  N2O4  is 38.3 at  27∘C. Calculate the mole of NO2  in 10 mole mixture.