Unit 2: Electrochemical Cells and Ionic Solutions
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Unit 2: Electrochemical Cells and Ionic Solutions

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Questions and Answers

What is the Nernst equation used for in electrochemistry?

  • Calculating the emf of a galvanic cell (correct)
  • Calculating the resistance in an electrolytic cell
  • Determining the standard potential of a cell
  • Calculating the equilibrium constant of a cell reaction

    • What does molar conductivity (✆m) of ionic solutions measure?

  • The electronic conductivity of a solution
  • The conductivity of a solution at infinite dilution (correct)
  • The rate of corrosion in a solution
  • The resistance of a solution to electrical flow

    • What does Kohlrausch's law describe regarding molar conductivity?

  • The variation of molar conductivity with concentration (correct)
  • The relationship between molar conductivity and temperature
  • The calculation of molar conductivity using Faraday's constant
  • The behavior of molar conductivity at zero dilution

    • What does the construction of primary and secondary batteries involve?

    <p>Using electrochemical processes to generate electrical energy</p> Signup and view all the answers

    How can corrosion be described in terms of electrochemistry?

    <p>An electrochemical process leading to metal degradation</p> Signup and view all the answers

    What aspect of electrolysis does electrochemistry focus on?

    <p>The quantitative understanding of chemical reactions driven by electricity</p> Signup and view all the answers

    What is the main focus of electrochemistry?

    <p>Producing electricity from chemical reactions</p> Signup and view all the answers

    What is the purpose of a galvanic or voltaic cell?

    <p>Converting chemical energy into electrical energy</p> Signup and view all the answers

    What happens when the opposing voltage reaches the value of 1.1 V in a galvanic cell?

    <p>The reaction stops altogether</p> Signup and view all the answers

    What is the function of an electrolytic cell?

    <p>Using electrical energy to carry non-spontaneous chemical reactions</p> Signup and view all the answers

    Which of the following is an example of a product produced by electrochemical methods?

    <p>Aluminum foil</p> Signup and view all the answers

    What do batteries and fuel cells do?

    <p>Convert chemical energy into electrical energy</p> Signup and view all the answers

    What happens in an electrolytic cell when the external potential is increased?

    <p>The reaction continues to take place</p> Signup and view all the answers

    What are the electrodes of a Daniell cell made of?

    <p>Zinc and copper</p> Signup and view all the answers

    What does an external opposite potential do in a galvanic cell?

    <p>Starts the reaction in the opposite direction</p> Signup and view all the answers

    What is a significant application of electrochemistry?

    <p>Conversion of sunlight into electricity using solar panels</p> Signup and view all the answers

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