Quantrex Quantrex AcademyJEE · NEET · NDA PYQs with solutions Open app
NTA Abhyas 2020
Exam
NTA Abhyas
Year
2020
Subject
Chemistry
Chapter
Practical Chemistry

NTA Abhyas 2020 · Chemistry · Practical Chemistry

The ammonia evolved from the treatment of 0.30 g of an organic...

The ammonia evolved from the treatment of 0.30 g of an organic compound for the estimation of nitrogen was passed in 100 mL of 0.1 M sulphuric acid. The excess of acid required 20 mL of 0.5 M sodium hydroxide solution for complete neutralization. The percentage nitrogen in the organic compound is

Correct answer

46.60

Step-by-step solution

Equivalents of NH3 evolved

=100×0⋅1×21000−20×0⋅51000=1100= \dfrac{1 0 0 \times 0 \cdot 1 \times 2}{1 0 0 0} - \dfrac{2 0 \times 0 \cdot 5}{1 0 0 0} = \dfrac{1}{1 0 0}

Percent of nitrogen in the unknown organic compound

=1100×140.3×100=46.6= \dfrac{1}{1 0 0} \times \dfrac{1 4}{0.3} \times 1 0 0 = 4 6 . 6
Practice Practical Chemistry on Quantrex Academy →

More from Practical Chemistry

Passage: Consider the following reaction sequence in which J , K , L and M are the major… JEE Advanced 2026Among Fe^ 3+ , Pb^ 2+ , Cu^ 2+ and Mn^ 2+ , identify the one that gets precipitated out… JEE Main 2026Among Fe^ 2+ , Fe^ 3+ , Cr^ 2+ and Zn^ 2+ , the ion that shows positive borax bead test… JEE Main 2026A salt with few drops of conc. HCl gives apple green colour in flame test. The group… JEE Main 2026A student has been given 0.314 g of an organic compound and asked to estimate Sulphur.… JEE Main 2026In the Group analysis of cations, Ba^ 2+ ~\&~ Ca^ 2+ are precipitated respectively as JEE Main 2026Consider three metal chlorides x, y and z, where x is water soluble at room temperature… JEE Main 2026By usual analysis, 1.00 g of compound (X) gave 1.79 g of magnesium pyrophosphate. The… JEE Main 2026 Full Practical Chemistry list All NTA Abhyas JEE Main PYQs