1. The ammonium content of a 0.560 g fertilizer sample was determined in a back titration in which the NH4 was converting into NH 3 gas which was trapped in excess aqueous HNO3 (through the reaction HNO3(aq) + NH3(g) → NH4NO3(aq)). If 25.0 mL of 0.0800 M HNO3 was used and the excess HNO3 required 18.2 mL of 0.0400 M NaOH (HNO3(aq) + NaOH(aq) → H₂O(l) + NaNO3(aq)) to reach an endpoint, determine the % NH4* of the sample. The formula weight of NH4 is 18.04 g/mol.

1. The ammonium content of a 0.560 g fertilizer sample was determined in a back titration in which the NH4 was converting into NH 3 gas which was trapped in excess aqueous HNO3 (through the reaction HNO3(aq) + NH3(g) → NH4NO3(aq)). If 25.0 mL of 0.0800 M HNO3 was used and the excess HNO3 required 18.2 mL of 0.0400 M NaOH (HNO3(aq) + NaOH(aq) → H₂O(l) + NaNO3(aq)) to reach an endpoint, determine the % NH4* of the sample. The formula weight of NH4 is 18.04 g/mol.

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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