0.85g of an organic compound is subjected to Kjeldahl's method for the estimation of nitrogen present. The ammonia evolved, neutralized 12.75mL of1MH2SO4. The percentage of nitrogen in the compound is (to the nearest integer)
A
42
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B
42.00
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C
42.0
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Solution
Milliequivalents of producedNH3=Milliequivalents of consumedH2SO4 Percentage of nitrogen=14×12.75×2×1001000×0.85 ⇒Percentage of nitrogen=42%