29.5 mg of an organic compound containing ni | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(C) Moles of $HCl$ taken $= 20 	imes 0.1 	imes 10^{-3} = 2 	imes 10^{-3} \ mol$. Moles of $HCl$ neutralized by $NaOH$ solution $= 15 	imes 0.1 	i

Vedclass · Accepted Answer

$23.7$

Vedclass · Answer

(C) Moles of $HCl$ taken $= 20 	imes 0.1 	imes 10^{-3} = 2 	imes 10^{-3} \ mol$. Moles of $HCl$ neutralized by $NaOH$ solution $= 15 	imes 0.1 	imes 10^{-3} = 1.5 	imes 10^{-3} \ mol$. Moles of $HCl$ neutralized by ammonia $= 2 	imes 10^{-3} - 1.5 	imes 10^{-3} = 0.5 	imes 10^{-3} \ mol$. Since $1 \ mol$ of $NH_3$ reacts with $1 \ mol$ of $HCl$,moles of $N = 0.5 	imes 10^{-3} \ mol$. Mass of nitrogen $= 0.5 	imes 10^{-3} \ mol 	imes 14 \ g/mol = 7 	imes 10^{-3} \ g = 7 \ mg$. Percentage of nitrogen $= (	ext{Mass of nitrogen} / 	ext{Mass of compound}) 	imes 100 = (7 \ mg / 29.5 \ mg) 	imes 100 \approx 23.7 \%$.

Similar Questions

Which compounds are taken in the Kjeldahl's flask for the estimation of nitrogen?

$0.16 \ g$ of an organic compound containing sulphur produces $0.233 \ g$ of $BaSO_4$. The percentage of sulphur in the compound is:

In the estimation of halogens by the Carius method,the halogen present in the organic compound is converted into which of the following?

When $0.15 \ g$ of an organic compound was analyzed using the Carius method for the estimation of bromine,$0.2397 \ g$ of $AgBr$ was obtained. The percentage of bromine in the organic compound is $.....$ (Nearest integer).
[Atomic mass: Silver $= 108$,Bromine $= 80$]

In the estimation of sulphur by Carius method,$0.468 \,g$ of an organic sulphur compound afforded $0.668 \,g$ of barium sulphate. Find out the percentage of sulphur in the given compound. (in $\%$)

Vedclass Test Series

Exam Paper Generator

Online Exam Module