$\mathrm{Xg}$ of ethylamine is subjected to reaction with $\mathrm{NaNO}_2 / \mathrm{HCl}$ followed by water; evolved dinitrogen gas which occupied $2.24 \mathrm{~L}$ volume at STP. X is _________ $\times 10^{-1} \mathrm{~g}$.
Answer (integer)
45
Solution
<p>Moles of $\mathrm{N}_2=0.1$</p>
<p>$$\begin{aligned}
\text { Mass of } \mathrm{C}_2 \mathrm{H}_5 \mathrm{NH}_2 & =(0.1) \times 45 \\
& =4.5 \mathrm{~gm} \\
& =45 \times 10^{-1} \\
& =45
\end{aligned}
$$</p>
About this question
Subject: Chemistry · Chapter: Some Basic Concepts of Chemistry · Topic: Mole Concept
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