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Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the oxidation number of oxygen in water (H2O)?
💡 Hint: Remember the typical oxidation state of oxygen in most compounds.
Question 2
Easy
Identify the species that is oxidized in the reaction: 2Mg + O2 → 2MgO.
💡 Hint: What loses electrons?
Practice 4 more questions and get performance evaluation
Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
Which of the following substances is reduced in the reaction 4Fe + 3O2 → 2Fe2O3?
- Fe
- O2
- Fe2O3
💡 Hint: Identify which element gains electrons in the overall reaction.
Question 2
True or False: Oxidation is the gain of electrons.
- True
- False
💡 Hint: Recall the basic definitions of oxidation and reduction.
Solve and get performance evaluation
Challenge Problems
Push your limits with challenges.
Question 1
Given the reaction: 2H2 + O2 → 2H2O, identify the oxidation numbers for each element and balance the reaction.
💡 Hint: Balance one type of atom at a time and be aware of the changes in oxidation states.
Question 2
For the reaction: C4H10 + 13O2 → 8CO2 + 10H2O, analyze the oxidation states of carbon and oxygen.
💡 Hint: Remember to analyze the state of each element in both reactants and products to find oxidation states.
Challenge and get performance evaluation