0.4422 gm. of an organic substance was treated according to Kjeldahl's method. The ammonia evolved was absorbed in 50 cc of 1N . The residual acid required 65.5 cc of N/2 alkaline solution. Find the percentage of nitrogen in the compound.
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grams of nitrogen/grams of sample x 100% = percentage of nitrogen in the unknown sample
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Kjeldahl method is used in quantitative determination of nitrogen present in inorganic compounds like ammonia and ammonium.
Equivalent weight of the acid taken =
Equivalent weight of the acid neutralized by alkaline solution =
Equivalent weight of the acid neutralized by ammonia =
Percentage of nitrogen =
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