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Electrochemistry: Oxidation and Reduction Reactions
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Electrochemistry: Oxidation and Reduction Reactions

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Questions and Answers

What is electrochemistry concerned with?

  • Conversion of electrical energy to chemical energy only
  • Production of chemical energy from electrical energy
  • Production of electrical energy from chemical energy only
  • Conversion of chemical energy to electrical energy and vice versa (correct)

    • What are examples of chemical changes involving the transfer of electrons?

  • Boiling of water, burning of wood, and melting of ice
  • Photosynthesis, digestion of food, and combustion of fuels
  • Rusting of iron, photosynthesis, and conversion of foods to energy (correct)
  • Digestion of food, boiling of water, and sublimation of dry ice

    • What does an electrochemical cell produce?

  • Mechanical energy
  • Chemical energy
  • Electrical energy (correct)
  • Heat energy

    • What is revealed by the voltmeter in an electrochemical cell?

    <p>Flow of electrons through the wire from one electrode to another</p> Signup and view all the answers

    What does an electrochemical cell involve?

    <p>Loss and gain of electrons only</p> Signup and view all the answers

    What does the reduction potential of a half-reaction indicate?

    <p>The tendency of the half-reaction to undergo reduction</p> Signup and view all the answers

    How is the competition for electrons between two half-reactions described?

    <p>Imagine a redox reaction as a competition for electrons between the two half-reactions</p> Signup and view all the answers

    What determines which half-reaction acquires electrons in a redox reaction?

    <p>The half-reaction with the larger reduction potential acquires electrons</p> Signup and view all the answers

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