Practice Balancing Redox Equations (ion-electron Method) (8.2.1)

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6 sample questions

Question 1.
Write the half-equation for the oxidation of zinc (Zn) to Zn²⁺.
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What happens to the electrons in oxidation?
Question 2.
What is the oxidation state of sulfur in H₂SO₄?
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Remember the rules for assigning oxidation states.
3Question 3.
What does the term oxidation refer to in redox reactions?
- Gain of electrons
- Loss of electrons
- No change in electrons
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Remember the mnemonic OIL RIG.
4Question 4.
True or False: In a redox reaction, oxidation and reduction can occur independently.
- True
- False
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Think about the connection between loss and gain of electrons.
Question 5.
Balance the following redox reaction in acidic solution: Arsenic acid (H₃AsO₄) is converted to Arsenic(III) acid (H₃AsO₃) while Iodine is reduced to iodide.
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Start with identifying oxidation and reduction halves.
Question 6.
You are given the following reaction under basic conditions: C₂O₄²⁻ + MnO₄⁻ → CO₂ + MnO₂. Balance this equation using the ion-electron method.
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Make sure to keep track of OH⁻ ions after balancing.

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