JEE Main 2022 · 29 Jun · Shift 1 · Chemistry Q88

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ChemistryInteger+4 / -1Question 88 of 90

Kjeldahl's method was used for the estimation of nitrogen in an organic compound. The ammonia evolved from 0.55 g of the compound neutralised 12.5 mL of 1 M $\mathrm{H_2SO_4}$ solution. The percentage of nitrogen in the compound is ______. (Nearest integer)

Your answer

Answer and worked solution

Official answer: 64

Ammonia. $12.5\times1\times2=25$ mmol, i.e. 0.35 g of N.

Percentage. $\frac{0.35}{0.55}\times100\approx64$ .

Answer: 64

Topics:Qualitative and quantitative analysis of organic compounds

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JEE Main 2022 · 29 Jun · Shift 1, Chemistry question 88