JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
Following Kjeldahl's method, \(1 \mathrm{~g}\) of organic compound released ammonia, that neutralised \(10\) \(\mathrm{mL}\) of \(2 \mathrm{M} \ \mathrm{H}_2 \mathrm{SO}_4\). The percentage of nitrogen in the compound is _______ \(\%\).
- A \(50\)
- B \(56\)
- C \(70\)
- D \(80\)
Answer & Solution
Correct Answer
(B) \(56\)
Step-by-step Solution
Detailed explanation
\(\mathrm{H}_2 \mathrm{SO}_4+2 \mathrm{NH}_3 \rightarrow\left(\mathrm{NH}_4\right)_2 \mathrm{SO}_4\) Millimole of \(\mathrm{H}_2 \mathrm{SO}_4 \rightarrow 10 \times 2\) So Millimole of \(\mathrm{NH}_3=20 \times 2=40\) Organic \(\rightarrow\) \(\mathrm{NH}_3\) Compound 40…
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