Answered: Write the relevant half-reactions, then…

Write the relevant half-reactions, then combine them into a full reaction for H2AsO3- oxidation to HAsO42- by reducing FeOOH to Fe2+

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 3CO: • write and balance half-reactions for simple redox processes.

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Concept explainers

Electrolysis

Electrolysis is defined as the process of breaking down ionic compounds into their constituent elements by passing a direct electric current through the compound in a fluid state. The cathode reduces cations, while the anode oxidizes anions. An electrolyte, electrodes, and some form of external power source are the main components required for conducting electrolysis. A partition, such as an ion-exchange membrane or a salt bridge, may also be used, but this is optional. These are primarily used to prevent the products from diffusing near the opposing electrode.

Question

Write the relevant half-reactions, then combine them into a full reaction for H₂AsO₃^- oxidation to HAsO₄^2- by reducing FeOOH to Fe²⁺

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Step 1: Defining oxidation and reduction process

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Step 2: Balancing the oxidation and reduction half reactions

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Step 3: Combining both of the half-reactions to get the balanced reaction

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• write and balance half-reactions for simple redox processes.
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