H - (109Z-6587)- Fall19 - BRESHEARS Activities and Due Dates HW 8 signment Score: 1745/2400 Resources > Question 4 of 24 Balance the redox reaction by inserting the appropriate coefficients redox reaction: Fe Fe2t + H +NO +NO, + H,O help contact us terms of use privacy policy careers about us MacBook Air

H - (109Z-6587)- Fall19 - BRESHEARS Activities and Due Dates HW 8 signment Score: 1745/2400 Resources > Question 4 of 24 Balance the redox reaction by inserting the appropriate coefficients redox reaction: Fe Fe2t + H +NO +NO, + H,O help contact us terms of use privacy policy careers about us MacBook Air

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter22: Bulk Electrolysis: Electrogravimetry And Coulometry

Section: Chapter Questions

Problem 22.30QAP

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A 15.46 g meat sample is taken, chopped, passed through a blender and the resulting suspension is filtered; obtaining a clean solution containing NO2-. Subsequently, it is treated with 25.00 mL of KMnO4 0.01548 M in acid medium. After 10 min, the remaining KMnO4 is titrated with 14.97 mL of FeSO4 0.08183 M. a) Indicate the redox reactions that take place and adjust them (Note: NO2- oxidizes to NO3- in an acid medium) b) Calculate the NO2- content in mg / kg (MW nitrite, 46.00) Answer: 1056 mg / kg