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![[Post New]](/templates/default/images/icon_minipost_new.gif) 17 May 2008 20:20:52 IST
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vapr density of a volatile substance is 4(CH4=1)....find its mol. wt.........ans is 64..pl
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17 May 2008 20:35:48 IST
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I dont know what do u mean by CH4=1
but if it means that this compound's V.D. is 4 times that of CH4, then this ques is pretty simple.
See, Molecular weight = 2 x V.D.
Let V.D. of CH4=v
Mol wt = 16
therefore v=8
Now the VD of the given substance is 4v = 32
Therefore its mol. wt = 2 x 32 = 64
Hope U get it.
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