11. Solution to Chemistry Problem

11. Solution to Chemistry Problem

4. A 1 g sample of ammonium salt was treated with an excess of concentrated sodium hydroxide solution. The released ammonia was absorbed by 50 ml of hydrochloric acid solution with a concentration of 1.072 mol-eq/l. The excess acid was titrated with 25.4 ml of sodium hydroxide solution with a titer of 0.00412 g/ml. Calculate the mass fraction (%) of ammonia in the sample.

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