A 0.166 g sample of an organic compound was digested with conc. H2SO4 and then distilled with NaOH. The ammonia gas evolved was passed through 50.0 mL of 0.5 N H2SO4. The used acid required 30.0 mL of 0.25 N NaOH for complete neutralization. The mass percentage of nitrogen in the organic compound is ___________.
A 0.166 g sample of an organic compound was digested with conc. H2SO4 and then distilled with NaOH. The ammonia gas evolved was passed through 50.0 mL of 0.5 N H2SO4. The used acid required 30.0 mL of 0.25 N NaOH for complete neutralization. The mass percentage of nitrogen in the organic compound is ___________.
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1 Answer
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Meq of NH3 = Meq of used H2SO4 = Meq of NaOH = 0.25 × 30 = 7.5
Millmoles of N = millimoles of NH3 = 7.5 (As n factor = 1)
Mass of nitrogen = 7.5 × 14 × 10-3 = 0.105 gm
% of Nitrogen =
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