In Dumas' method of estimation of nitrogen, 0.35 g of an organic compound gave 55 mL of nitrogen gas collected at 300 K and 715 mm pressure. Thepercentage composition of nitrogen in the compound would be :

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14.45

15.45

16.45

17.45

answer is C.

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Detailed Solution

V2STP=P1V1T1×T2P2=715×55300×273760=47.08mLN%=V2STP8w=47.088×0.35=16.8%

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