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NEET Chemistry Analytical Chemistry Question Bank Self Evaluation Test - Analytical Chemistry

  • question_answer
    0.59 g of an organic substance when treated with caustic soda evolved ammonia which required 20 cc of N/2 sulphuric acid for neutralisation. The percentage of nitrogen is

    A) 26.32%            

    B) 40%

    C) 53.6%              

    D) 63.6%

    Correct Answer: A

    Solution :

    [a] Percentage of nitrogen by Kjeldahl's method \[=\frac{1.4\times N\times V}{Wt.\text{ }of\text{ }organic\text{ }compound}\] \[=\frac{1.4\times 20}{0.532}\times \frac{1}{2}=26.32%\]%


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