113. Задачка по химии №011 376

Sample m=1.21 g containing (NH4)2SO4 and NH4NO3 was dissolved in water and diluted to 200.0 ml. Alkali was added to 50.0 ml of the solution, the released ammonia was distilled off into a flask with 30.0 ml of a 0.0842 N HCl solution. For titration of excess HCl, 10.1 ml of 0.0880 N NaOH was used. Calculate the mole fraction of NH4 cations in the sample.

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