A 14.92 g sample of bacon was pureed in a blender with 100.0 mL of water. The suspension was filtered and the clear solution containing dissolved sodium nitrite was adjusted to pH 2. The solution was treated with 25.0 mL of 0.0150 M KMN04 to oxidize the nitrite to nitrate and after standing for 10 minutes, the excess KMN04 was back titrated with 15.0 ml of 0.0818 M FeS04.

Fundamentals Of Analytical Chemistry
9th Edition
ISBN:9781285640686
Author:Skoog
Publisher:Skoog
Chapter17: Complexation And Precipitation Reactions And Titrations
Section: Chapter Questions
Problem 17.33QAP
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write all the balanced redox reactions and determine the concentration of nitrite in the bacon (ppm)

A 14.92 g sample of bacon was pureed in a blender with 100.0 mL of water. The suspension was filtered and the clear
solution containing dissoived sodium nitrite was adjusted to pH 2. The solution was treated with 25.0 ml of 0.0150 M
KMN04 to oxidize the nitrite to nitrate and after standing for 10 minutes, the excess KMN04 was back titrated with 15.0
ml of 0.0818 M FeSsO4.
Transcribed Image Text:A 14.92 g sample of bacon was pureed in a blender with 100.0 mL of water. The suspension was filtered and the clear solution containing dissoived sodium nitrite was adjusted to pH 2. The solution was treated with 25.0 ml of 0.0150 M KMN04 to oxidize the nitrite to nitrate and after standing for 10 minutes, the excess KMN04 was back titrated with 15.0 ml of 0.0818 M FeSsO4.
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