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Approximate maximum quantity of nitrogen to be distilled = 200 mg Sulphuric acid 0.5 N to be placed in the receiving flask = 35 ml Titration with sodium or potassium hydroxide, 0.5 N solution
| Declaration N% | Amount to be weighed (g) | Dilution (ml) | Solution of sample to be distilled (ml) | Expression of the result (1) N% = (50−A) F |
|---|---|---|---|---|
(1) For the purposes of the formula for expression of the result:
| ||||
| 0-5 | 10 | 500 | 200 | (35−A) × 0.175 |
| 5-10 | 10 | 500 | 100 | (35−A) × 0.350 |
| l0-15 | 7 | 500 | 100 | (35−A) × 0.500 |
| 15-20 | 5 | 500 | 100 | (35−A) × 0.700 |
| 20-40 | 5 | 500 | 50 | (35−A) × 1.400 |
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