The amount of lactic acid, HCa Hg O3, produced in a sample of muscle tissue was analyzed by its reaction with a hydroxide ion. A hydroxide ion was produced in the sample mixture by electrolysis. The cathode reaction was 2H2O(1) + 2e → H2 (9) + 20H (ag) A hydroxide ion reacts with lactic acid as soon as it is produced. The endpoint of the reaction is detected with an acid-base indicator. It required 107 s for a current of 15.6 mA to reach the endpoint. How many grams of lactic acid (a monoprotic acid) were present in the sample?

The amount of lactic acid, HCa Hg O3, produced in a sample of muscle tissue was analyzed by its reaction with a hydroxide ion. A hydroxide ion was produced in the sample mixture by electrolysis. The cathode reaction was 2H2O(1) + 2e → H2 (9) + 20H (ag) A hydroxide ion reacts with lactic acid as soon as it is produced. The endpoint of the reaction is detected with an acid-base indicator. It required 107 s for a current of 15.6 mA to reach the endpoint. How many grams of lactic acid (a monoprotic acid) were present in the sample?

Chemistry for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter13: Electrochemistry

Section: Chapter Questions

Problem 13.101PAE

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