Oxidation and Reduction Quiz
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Questions and Answers

Which of the following is true about oxidation and reduction?

  • Oxidation involves a decrease in the oxidation number.
  • Reduction involves a decrease in the oxidation number.
  • Reduction involves an increase in the oxidation number.
  • Oxidation involves a increase in the oxidation number. (correct)

    • In the reaction CuO (s) + H2 (g) → Cu(s) + H2O(l), which element is oxidized?

  • Cu
  • O (correct)
  • H
  • None of the above

    • What is the oxidizing agent in the reaction Zn(s) + CuSO4(aq) → ZnSO4(aq) + Cu(s)?

  • Zinc (Zn)
  • Copper (Cu) (correct)
  • Sulfur (S)
  • None of the above

    • What is the reducing agent in the reaction Na(s) + 2HCl(aq) → 2NaCl(aq) + H2(g)?

    <p>Sodium (Na)</p> Signup and view all the answers

    If you have 117 g of NaCl dissolved in 300 ml of solution, what is the concentration of NaCl in the solution?

    <p>3.90 M</p> Signup and view all the answers

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