The task of analytical chemistry 46

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A portion of 0,475 g sample containing (NH4)2SO4, dissolved in water and KOH podmilacje. Liberated NH3 was distilled just in 50,0 ml of 0,100 n HCl solution. The excess HCl was gottitravel 0,121 n NaOH solution at a cost of 11.1 ml. you want to calculate the percentage of NH3 (mol. weight 17,0) and also the percentage of (NH4)2SO4 (mol. weight 132) in the sample.

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