QJEEM22Chafdb: JEE Main 2022 Chemistry - Class 11 JEEM22Chafdb Solution: While estimating the nitrogen present in an organic compound by …

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QJEEM22Chafdb: JEE Main 2022 Chemistry - Class 11 JEEM22Chafdb Solution: While estimating the nitrogen present in an organic compound by …

While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from $0.25 g$ of the compound neutralized $2.5 mL$ of $2 M H_{2} {SO}_{4}$ . The percentage of nitrogen present in organic compound is ______________.

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Accepted Answer

{NH}_{3}

gas is neutralized by

2.5 mL

of

2 M H_{2} {SO}_{4}

∴

Moles of

{NH}_{3}

neutralized

= 2.5 \times 2 \times 2

millimole

= 10 \times 10^{- 3} moles

∴

Weight of

N

present in the compound will be

\begin{aligned} = 10 \times 10^{- 3} \times 14 \\ = 0.14 g \end{aligned}

∴ %

of '

N

' in compound

\begin{aligned} = \frac{0.14}{0.25} \times 100 \\ = 56 % \end{aligned}

QJEEM22Chafdb: JEE Main 2022 Chemistry - Class 11 JEEM22Chafdb Solution: While estimating the nitrogen present in an organic compound by …

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