JEE Mains · Chemistry · STD 11 - 8.3. Organic chemistry purification and characterization
In Dumas' method for estimation of nitrogen 1 g of an organic compound gave 150 mL of nitrogen collected at 300 K temperature and 900 mm Hg pressure. The percentage composition of nitrogen in the compound is _____ \(\%\) (nearest integer).
(Aqueous tension at \(300 \mathrm{~K}=15 \mathrm{~mm} \mathrm{Hg}\))
- A 22
- B 24
- C 20
- D 18
Answer & Solution
Correct Answer
(C) 20
Step-by-step Solution
Detailed explanation
Partial pressure of \(\mathrm{N}_2=(900-15)=885 \mathrm{~mm} \mathrm{Hg}\) Mole of \(\mathrm{N}_2=\frac{\left(\frac{885}{760} \times 0.15\right)}{(0.0821 \times 300)}=0.0071\) Moles \(\%\) of nitrogen in organic compound…
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