Question Detail

CHM 102 Qualitative and Quantitative Analysis in Organic Chemistry Objective Question
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Question

What is the main limitation of the Kjeldahl method for nitrogen estimation?
Options
A Cannot detect nitrogen in nitro, azo, and diazo compounds
Correct Answer
B Requires expensive equipment
C Is fully automated
D Takes only minutes
Correct Answer

Option A is the correct answer.

Detailed Explanation

The Kjeldahl method does not detect nitrogen in compounds with N-N, N=O, or C≡N bonds (nitro, azo, diazo, nitriles) because they do not convert to ammonium sulfate under digestion conditions.

Hint

Some N forms not detected.

Question Info

Course: CHM 102
Topic: Qualitative and Quantitative Analysis in Organic Chemistry
Type: Objective
Difficulty: Not specified
Question 850 of 1999
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