A 1.219 g sample containing (NH4)2SO4, NH4NO3, and non-reactive substances was diluted to 200 mL in a volumetric flask. A 50.00 mL aliquot was alkalized with a strong base and the released NH3 was distilled into 30.00 mL of 0.08421 M HCl. The excess HCl required 10.17 mL of 0.08802 M NaOH for neutralization. Then, a 25.00 mL aliquot of the sample was alkalized after the addition of the Devarda alloy and the NO3- was reduced to NH3. The NH3 from both NH4+ and NO3- was distilled from 30.00 mL of the standard acid and back-titrated with 14.16 mL of the base. Calculate the percentage of (NH4)2SO4 and NH4NO3 in the sample.
A 1.219 g sample containing (NH4)2SO4, NH4NO3, and non-reactive substances was diluted to 200 mL in a volumetric flask. A 50.00 mL aliquot was alkalized with a strong base and the released NH3 was distilled into 30.00 mL of 0.08421 M HCl. The excess HCl required 10.17 mL of 0.08802 M NaOH for neutralization. Then, a 25.00 mL aliquot of the sample was alkalized after the addition of the Devarda alloy and the NO3- was reduced to NH3. The NH3 from both NH4+ and NO3- was distilled from 30.00 mL of the standard acid and back-titrated with 14.16 mL of the base. Calculate the percentage of (NH4)2SO4 and NH4NO3 in the sample.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Solve the following problem:
A 1.219 g sample containing (NH4)2SO4, NH4NO3, and non-reactive substances was diluted to 200 mL in a volumetric flask. A 50.00 mL aliquot was alkalized with a strong base and the released NH3 was distilled into 30.00 mL of 0.08421 M HCl. The excess HCl required 10.17 mL of 0.08802 M NaOH for neutralization.
Then, a 25.00 mL aliquot of the sample was alkalized after the addition of the Devarda alloy and the NO3- was reduced to NH3. The NH3 from both NH4+ and NO3- was distilled from 30.00 mL of the standard acid and back-titrated with 14.16 mL of the base.
Calculate the percentage of (NH4)2SO4 and NH4NO3 in the sample.
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