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Questions and Answers
Which of the following is true about oxidation and reduction?
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?
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)?
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)?
What is the reducing agent in the reaction Na(s) + 2HCl(aq) → 2NaCl(aq) + H2(g)?
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If you have 117 g of NaCl dissolved in 300 ml of solution, what is the concentration of NaCl in the solution?
If you have 117 g of NaCl dissolved in 300 ml of solution, what is the concentration of NaCl in the solution?
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