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29.5 mg of organic compound containing nitrogen was digested according to kjeldahal method and evolved ammonia was absorbed in 20 ml of .1M Hcl the excess of the acid required 15 ml of 0.1 molarity of energy for complete neutralization the percentage of Nitrogen in the compound is

Rohit kr patel , 7 Years ago
Grade 11
anser 1 Answers
Vikas TU

Last Activity: 7 Years ago

15 ml and 0.1 M is required for the complete neutralization tehrfore moles that dissolved te ammonia fully would be => 
20*0.1 – 15*0.1 => 2- 1.5 => 0.5mmoles.
Therfore 0.5 Moles of NH3 would have 0.5 mmoles of N and the weight would be => 0.5*14/1000 => 0.007 gms.
Therefore percentage of N in 29.5 mg of organic compound would be => 0.007*100/0.0295 = 23.72%

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