JEE Main 2022 · 25 Jul · Shift 1 · Chemistry Q88

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ChemistryInteger+4 / -1Question 88 of 90

While estimating the nitrogen present in an organic compound by Kjeldahl's method, the ammonia evolved from 0.25 g of the compound neutralized 2.5 mL of 2 M $\mathrm{H_2SO_4}$ . The percentage of nitrogen present in organic compound is ______.

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Answer and worked solution

Official answer: 56

Ammonia $2\times2.5\times2=10$ mmol, i.e. 0.14 g N. Percentage $\frac{0.14}{0.25}\times100=56$ .

Answer: 56

Topics:Qualitative and quantitative analysis of organic compounds

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JEE Main 2022 · 25 Jul · Shift 1, Chemistry question 88