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College Electrochemistry Questions

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College Electrochemistry
Given the standard reduction potentials in the table, which of the following MUST be true about a galvanic cell created from any two metal electrodes?
Standard Reduction Potentials
  1. The value of the galvanic cell potential must always be negative
  2. The value of the galvanic cell potential must always be zero
  3. The value of the galvanic cell potential must always be positive
  4. None of the above
College Electrochemistry
Which of the following correctly represents a galvanic cell consisting of strontium and lithium using line notation?
Standard Reduction Potentials
  1. Li+(aq)|Li(s)||Sr(s)|Sr2+(aq)
  2. Li(s)|Li+(aq)||Sr(s)|Sr2+(aq)
  3. Li(s)|Li+(aq)||Sr2+(aq)|Sr(s)
  4. Li+(aq)|Li(s)||Sr2+(aq)|Sr(s)
College Electrochemistry
Which of the following represents a galvanic cell consisting of iron and sodium electrodes?
Standard Reduction Potentials
  1. Fe(s)|Fe2+(aq)||Na+(aq)|Na(s)
  2. Fe2+(aq)|Fe(s)||Na+(aq)|Na(s)
  3. Na(s)|Na+(aq)||Fe2+(aq)|Fe(s)
  4. None of the above