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College Oxidation-Reduction Reactions Questions

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College Oxidation-Reduction Reactions
What is oxidation?
  1. Loss of electrons
  2. Loss of hydrogen
  3. Gain of hydrogen
  4. Gain of electrons
College Oxidation-Reduction Reactions
What is reduction?
  1. Gain of electrons
  2. Gain of hydrogen
  3. Loss of electrons
  4. Loss of hydrogen
College Oxidation-Reduction Reactions
Which of the following represents the correct oxidation half-reaction for the following redox reaction?

[math]Zn + H_2O rarr ZnO + H_2[/math]
  1. [math]H_2 rarr 2H^+ + 2e^-[/math]
  2. [math]2H^+ + 2e^{-} rarr H_2[/math]
  3. [math]Zn rarr Zn^{2+} + 2e^-[/math]
  4. [math]Zn^{2+} + 2e^{-} rarr 2Zn^0[/math]
College Oxidation-Reduction Reactions
Which of the following represents a redox reaction?
  1. [math]2AgClO_3 rarr 2AgCl + 3O_2[/math]
  2. [math]KOH + HCl rarr H_2O + KCl[/math]
  3. [math]Pb(NO_3)_2 + 2KCl rarr PbCl_2 + 2KNO_3[/math]
  4. [math]LiCl rarr Li^+ + Br^-[/math]
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