The nitrogen and protein content of a 2.8391 g sample of milk was determined using Kjeldahl analysis. After digestion, the liberated NH3 was distilled in a flask containing 25.00 mL of standard 0.250 M HCI. Titration requires 31.65 ml of standard 0.100 M NaOH to reach the desired endpoint. Calculate the weight percent of N (FW-14.01) and protein in the sample of milk. Report values in 3 SF. % N = % % Protein

The nitrogen and protein content of a 2.8391 g sample of milk was determined using Kjeldahl analysis. After digestion, the liberated NH3 was distilled in a flask containing 25.00 mL of standard 0.250 M HCI. Titration requires 31.65 ml of standard 0.100 M NaOH to reach the desired endpoint. Calculate the weight percent of N (FW-14.01) and protein in the sample of milk. Report values in 3 SF. % N = % % Protein

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter4: Stoichiometry: Quantitative Information About Chemical Reactions

Section4.9: Spectrophotometry

Problem 2.1ACP: Excess KI is added to a 100.0-mL sample of a soft drink that had been contaminated with bleach,...

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