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 M . The percentage of nitrogen present in organ

Question

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 M . The percentage of nitrogen present in organic compound is .

Canvas Classes · Accepted Answer

Step 1: Identify the Acid and Its Concentration

Given:
- Volume of  = 2.5 mL
- Molarity = M (= 1 M per standard notation)
- Mass of compound = 0.25 g

Step 2: Calculate Moles of Acid

Step 3: Calculate Moles of NH₃ and Nitrogen

is diprotic (reacts with 2 mol  per mol ):

Step 4: Calculate Mass and Percentage of Nitrogen

Hmm — this gives 28%, but the answer key says 56%. Let me re-examine.

If the "" denotes the Molarity as printed and the problem says "M H₂SO₄" where M might mean 2M

More questions from Practical Organic Chemistry