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In Dumas method , 0.3 g of an organic co...

In Dumas method , 0.3 g of an organic compound gave 45 ml of nitrogen at STP. The percentage of nitrogen is

A

16.9

B

18.7

C

23.2

D

29.6

Text Solution

Verified by Experts

The correct Answer is:
B
`%` of nitrogen at STP `=(28V xx100)/(22400xxW)`
`V=45 ml`
`W=0.3g`.
`%` Nitrogen `=(Vxx100)/(Wxx22400) `
`(28xx45xx100)/(0.3xx22400)=18.75`.
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