During halogens test, sodium fusion extract is boiled with concentrated HNO3 to
During halogens test, sodium fusion extract is boiled with concentrated HNO3 to
Option 1 -
Remove unreacted sodium
Option 2 -
Decompose cyanide or sulphide of sodium
Option 3 -
Extract halogen form organic compound
Option 4 -
Maintain the pH of extract.
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1 Answer
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Correct Option - 2
Detailed Solution:Sodium fusion extract is boiled with conc. HNO3 to remove NaCN and Na2S.
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Kindly consider the following figure
Meq of NH3 = Meq of used H2SO4 = Meq of NaOH = 0.25 × 30 = 7.5
Millmoles of N = millimoles of NH3 = 7.5 (As n factor = 1)
Mass of nitrogen = 7.5 × 14 × 10-3 = 0.105 gm
% of Nitrogen =
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