Question

The diagram shows a Zn/MnO2-KOH alkaline dry cell.

In your response, do the following:
- Label all parts.
- Label the cathode and the anode, including the charges on each.
- Show the flow of electrons.
- Explain how the cell works. Include the oxidation and reduction half-reactions in your explanation.

Answer:

Answer 1

Answer:

The oxidation half-reaction occurs at one electrode (the anode), and the reduction half-reaction occurs at the other (the cathode). ... A galvanic cell (left) transforms the energy released by a spontaneous redox reaction into electrical energy that can be used to perform work.

Combine half reactions to determine the voltage of a voltaic cell. ... lists only reduction reactions, but a redox reaction has a reduction and an oxidation. ... and useful, dry cells have relatively short lifetimes and contain acidic components.In redox reactions, electrons are transferred from one species to another. ... A half-cell is composed of an electrode (a strip of metal, M) within a ... In a voltaic cell, the oxidation and reduction of metals occurs at the electrodes.

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Answer 2

• The oxidation half-reaction occurs at one electrode (the anode), and the reduction half-reaction occurs at the other (the cathode).
• A galvanic cell (left) transforms the energy released by a spontaneous redox reaction into electrical energy that can be used to perform work.

• Combine half reactions to determine the voltage of a voltaic cell.
• lists only reduction reactions, but a redox reaction has a reduction and an oxidation. ... and useful, dry cells have relatively short lifetimes and contain acidic components.In redox reactions, electrons are transferred from one species to another.
• A half-cell is composed of an electrode (a strip of metal, M) within a ... In a voltaic cell, the oxidation and reduction of metals occurs at the electrodes.

What are alkaline dry cells?

• An alkaline battery is a type of a dry cell primary battery that uses the chemical reaction of zinc and magnesium oxide and an alkaline electrolyte of potassium hydroxide to generate electric current.
• It is currently the most popular type of disposable battery in the market.

What is alkaline cell used for?

• Usage of alkaline batteries for low-drain applications offers commendable performance with very low replacement rate.

• Low-drain applications include flashlights, portable radios, alarm clocks, remote controls, toys and the like.
• Low-drain applications dominate the alkaline battery market.

How does an alkaline dry-cell work?

• These free electrons congregate inside the anode (the bottom, flat part of an alkaline battery).
• As a result, the two electrodes have different charges, The anode becomes negatively charged as electrons are released, and the cathode becomes positively charged as electrons (which are negatively charged) are consumed.

Learn more about alkaline dry cell here,

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