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For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10 sulphuric acid. The unreacted acid required 20 ml of M/10 odium hydroxide for complete neutralisation. The percentage of nitrogen in the compound is
  • a)
    3%
  • b)
    5%
  • c)
    6%
  • d)
    10%
Correct answer is option 'D'. Can you explain this answer?
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For the estimation of nitrogen, 1.4 g of an organic compound was diges...
Given data:
- Mass of organic compound = 1.4 g
- Volume of M/10 sulfuric acid used to absorb evolved ammonia = 60 mL
- Volume of M/10 sodium hydroxide required for neutralization = 20 mL

Calculations:
1. The molarity of M/10 sulfuric acid = 1/10 * 1 = 0.1 M
2. The molarity of M/10 sodium hydroxide = 1/10 * 1 = 0.1 M
3. The moles of sulfuric acid used = (0.1 mol/L) * (60 mL/1000) L = 0.006 mol
4. The moles of sodium hydroxide used = (0.1 mol/L) * (20 mL/1000) L = 0.002 mol
5. The moles of sulfuric acid left unreacted = 0.006 - 0.002 = 0.004 mol
6. The moles of ammonia evolved = moles of sulfuric acid left unreacted = 0.004 mol
7. The moles of nitrogen in the compound = moles of ammonia evolved = 0.004 mol
8. The mass of nitrogen in the compound = (0.004 mol) * (14 g/mol) = 0.056 g

Percentage of nitrogen:
Percentage of nitrogen = (0.056 g / 1.4 g) * 100% = 4%
Therefore, the percentage of nitrogen in the compound is approximately 4%, which is closest to option 'D' (10%).
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For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10sulphuric acid. The unreacted acid required 20 ml of M/10odium hydroxide for complete neutralisation. The percentage of nitrogen in the compound isa)3%b)5%c)6%d)10%Correct answer is option 'D'. Can you explain this answer?
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For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10sulphuric acid. The unreacted acid required 20 ml of M/10odium hydroxide for complete neutralisation. The percentage of nitrogen in the compound isa)3%b)5%c)6%d)10%Correct answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10sulphuric acid. The unreacted acid required 20 ml of M/10odium hydroxide for complete neutralisation. The percentage of nitrogen in the compound isa)3%b)5%c)6%d)10%Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for For the estimation of nitrogen, 1.4 g of an organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M/10sulphuric acid. The unreacted acid required 20 ml of M/10odium hydroxide for complete neutralisation. The percentage of nitrogen in the compound isa)3%b)5%c)6%d)10%Correct answer is option 'D'. Can you explain this answer?.
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