0.25gm of an organic compound in kjeldahl's method ,produced ammonia gas which was absorbed by 25ml of 0.5m h2so4 . The residual acid required 30ml of 0.5m naoh for complete neutralisation . Find the percentage composition of nitrogen in the organic compound
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Answer:
this should be 0.5/50= 100/25ml= 250
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Answer:
Explanation:
BY QUNATITATIVE ANALYSIS WE KNOW THAT
NITROGEN IS ESTIMATED BY KJEDALS METHOD
AND FORMULA FOR THAT IS
PERCENTAGE NITROGEN WHEN AMMONIA IS USED IN ESTIMATION
= 14 / 17 * WEIGHT OF COMPOUND / WEIGHT OF ORGANIC COMPOUND
=14/17*WEIGHT OF NH3 FORMED / WEIGHT OF ORGANIC COMPOUND
EQUIVALENT OF NH3 FORMED = DIFFERENCE IN EQUIVALENTS
=25-15
=10
EQUIVALENT OF NH3 FORMED = 10
MOLES*F*1000=10
MOLES*1*1000=10
MOLES=1/100
MOLES = 0.01
W/17=0.01
W=0.17
PERCENTAGE = 14/17*0.17/0.25*100
=56
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