Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is oxidation?
💡 Hint: Think about what happens to the charge during oxidation.
Question 2
Easy
What is the oxidation state of oxygen in most compounds?
💡 Hint: Consider the common compounds you know.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What happens during oxidation?
- Gain of electrons
- Loss of electrons
- Stays the same
💡 Hint: Think about what is happening to the electrons in the process.
Question 2
True or False: The oxidation state of an element in its pure form is 0.
- True
- False
💡 Hint: Consider whether the element is bonded with anything else.
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Challenge Problems
Push your limits with challenges.
Question 1
Given the half-reaction Cr₂O₇²⁻ + 14H⁺ + 6e⁻ → 2Cr³⁺ + 7H₂O, determine oxidation states of chromium and oxygen.
💡 Hint: Remember to consider the overall charge balance in the ion.
Question 2
Combine the two half-reactions: C₂O₄²⁻ → 2CO₂ + 2e⁻ and MnO₄⁻ + 8H⁺ + 5e⁻ → Mn²⁺ + 4H₂O. What is the overall balanced reaction?
💡 Hint: Make sure to equalize the number of electrons transferred in each half-reaction.
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