The amount of nitrogen in an organic substance can be determined by an analytical method called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammonia. The ammonia, which is a weak base, can be neutralized with hydrochloric acid, as described by the equation NH, (aq) + HCl(aq) NH,CI(aq) If 18.0 mL of 0.150 M HCI(aq) is needed to neutralize all the NH, (g) from a 2.25 g sample of organic material, calculate the mass percentage of nitrogen in the sample. mass percentage: %
The amount of nitrogen in an organic substance can be determined by an analytical method called the Kjeldahl method, in which all the nitrogen in the organic substance is converted to ammonia. The ammonia, which is a weak base, can be neutralized with hydrochloric acid, as described by the equation NH, (aq) + HCl(aq) NH,CI(aq) If 18.0 mL of 0.150 M HCI(aq) is needed to neutralize all the NH, (g) from a 2.25 g sample of organic material, calculate the mass percentage of nitrogen in the sample. mass percentage: %
Chemistry: Principles and Practice
3rd Edition
ISBN:9780534420123
Author:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Publisher:Daniel L. Reger, Scott R. Goode, David W. Ball, Edward Mercer
Chapter16: Reactions Between Acids And Bases
Section: Chapter Questions
Problem 16.77QE
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Transcribed Image Text:The amount of nitrogen in an organic substance can be determined by an analytical method called the Kjeldahl method, in
which all the nitrogen in the organic substance is converted to ammonia. The ammonia, which is a weak base, can be
neutralized with hydrochloric acid, as described by the equation
NH, (aq) + HCl(aq)
NH,Cl(aq)
If 18.0 mL of 0.150 M HC1(aq) is needed to neutralize all the NH,(g) from a 2.25 g sample of organic material, calculate the
mass percentage of nitrogen in the sample.
mass percentage:
%
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