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Electrochemistry Questions - All Grades

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Grade 10 Electrochemistry

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Which statement explains why zinc and copper are poorer choices to make engagement rings than gold is?
  1. Zinc is less active than copper is, while copper is less active than gold is
  2. Zinc is less active than gold is, while gold is less active than copper is
  3. Gold is more active than both zinc and copper are, so it will oxidize (rust) more easily
  4. Both zinc and copper are more active than gold is, so both will oxidize (rust) more easily
Grade 10 Electrochemistry

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Where does oxidation occur in this galvanic cell?
  1. At the copper electrode
  2. At the zinc electrode
  3. In the salt bridge
  4. In the wire
Grade 11 Electrochemistry
In an electrolytic cell, electrical energy is converted into
  1. chemical energy
  2. heat energy
  3. kinetic energy
  4. potential energy
Grade 10 Electrochemistry

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If this galvanic cell were changed to another type of cell involving a nonspontaneous reaction, which of the following would be true?
  1. The flow of electrons would change direction from what is shown
  2. The charges of both electrodes would be positive
  3. Zinc ions would gain electrons at the zinc electrode to become zinc atoms
  4. None of the above
Grade 10 Electrochemistry

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Grade 10 Electrochemistry

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When the galvanic cell shown is in operation, which of the following is true?
  1. The sulfate ion is attracted to the zinc electrode
  2. The copper ion is attracted to the copper electrode
  3. All ions, except for sulfate ions, will be attracted to the zinc electrode
  4. Negative ions, including sulfate, will be attracted to the copper electrode
Grade 10 Electrochemistry

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Which feature on this diagram is unique to galvanic cells?
  1. The wire
  2. The positioning of the anode to the left
  3. The positioning of the cathode to the right
  4. The salt bridge
Grade 10 Electrochemistry

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College Electrochemistry
Which of the following represents a galvanic cell consisting of iron and sodium electrodes?
Standard Reduction Potentials
  1. [math]Fe "(s)""|"Fe^"2+" "(aq)" "||" Na^"+" "(aq)""|"Na "(s)"[/math]
  2. [math]Fe^"2+" "(aq)""|"Fe "(s)" "||" Na^"+" "(aq)""|"Na "(s)"[/math]
  3. [math]Na "(s)""|"Na^"+" "(aq)" "||" Fe^"2+" "(aq)""|"Fe "(s)"[/math]
  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. [math]Li^+ "(aq)""|"Li "(s)" "||" Sr"(s)""|"Sr^"2+" "(aq)"[/math]
  2. [math]Li "(s)""|"Li^"+" "(aq)" "||" Sr"(s)""|"Sr^"2+" "(aq)"[/math]
  3. [math]Li "(s)""|"Li^"+" "(aq)" "||" Sr^"2+" "(aq)""|"Sr "(s)"[/math]
  4. [math]Li^+ "(aq)""|"Li "(s)" "||" Sr^"2+""(aq)""|"Sr "(s)"[/math]
Grade 10 Electrochemistry

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Which diagram correctly describes chemical activity, as it relates to this diagram?
  1. Zinc is less chemically active than copper is
  2. Zinc and copper are equally chemically active
  3. Zinc is more active than copper is
  4. None of the above
Grade 10 Electrochemistry

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Which of the following is true about mass, as it relates to this diagram?
  1. The mass of the zinc electrode increases because electrons are being gained
  2. The mass of the copper electrode increases because electrons are being gained
  3. The mass of the copper electrode decreases because electrons are being lost
  4. The mass of the zinc electrode decreases because electrons are being gained
Grade 10 Electrochemistry

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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
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