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In Dumas’ method for estimation of nitro...

In Dumas’ method for estimation of nitrogen, 0.3g of an organic compound gave 50mL of nitrogen collected at 300K temperature and 715mm pressure. Calculate the percentage composition of nitrogen in the compound. (Aqueous tension at 300K=15 mm)

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w=0.30g `V_(1)=50ml`
`P_(1)=(P-a)`=715- 15= 700mm of Hg
`T_(1)=300K`
Now `(P_(1)V_(1))/T_(1) = (P_(2)V_(2))/T_(2)`
`implies V_(2)= 41.9ml`
Weight of nitrogen `=28/22400 xx41.9g`
Percentage of Nitrogen= `(28xx41.9)/(22400 xx 0.3) xx100 = 17.46%`
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AAKASH INSTITUTE ENGLISH-ORGANIC CHEMISTRY : SOME BASIC PRINCIPLES AND TECHNIQUES -Assignment(Section-D)(Assertion - Reason Type Questions)
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  7. A:The formation of.NaCbTduring preparation q? sodium extract will give...

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  8. A : Before testing of halogens, sodium extract must be boiled with con...

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  9. A : Glycerol decomposes at its boiling point. R : It can be purifie...

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  14. A : CH(3)— BH — CH(2) can not show resonance. R : Boron and carboc...

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  15. A: C(2)BrClFI can form 6 different geometrical isomers. R : Each o...

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  16. A: Phenol is more reactive than toluene towards S(E) reaction. R: ...

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