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Ask experts Expert Question: The vapour density of a mixture containing NO2 and N2O4 is 38.3 at 27deg. Celsius. Calculate the mol
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sumit (0)

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The vapour density of a mixture containing NO2 and N2O4 is 38.3 at 27deg. Celsius. Calculate the moles of NO2 in 100 moles of mixture.
    

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Anirudh Kumar (295)

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total moles of mixture is 100.


let there be 'x' moles of NO2 molecular mass is 46 g


thus there are (100-x) moles of N2O4 molecular mass is 92g .  


total mass of mixture =  x * 42 + (100-x) 92  


molecular mass of mixture  =  2 * V.D = 2* 38.3 = 76.6


thus            


 

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Krishna Gopal Singh (4159)

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Right answer. Just one thing you have written 42x but it is actually 46x. 


Krishna Gopal Singh
B.Tech Chemical Engg
IIT Delhi 2002
Currently doing PhD from IIT Delhi
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Anirudh Kumar (295)

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 sorry bahiay a typing mistake . 

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