Chemistry-(general)
NEET Chemistry (general) MCQ Question
Type: MCQ-numerical-Hard-Class 11
In Dumas' method for nitrogen estimation, an organic compound weighing 0.3 g yielded 41.9 mL of nitrogen gas collected at 300 K and 760 mm Hg. What is the percentage composition of nitrogen in the compound?
A
17.46%
B
16.54%
C
18.12%
D
15.89%
Correct Answer
Option A
Detailed Explanation
Using the volume of nitrogen at STP (41.9 mL) and the weight (0.3 g), the percentage of nitrogen is calculated as 17.46% using the formula: (28 × 41.9 × 100) / (22400 × 0.3).
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