Practice - Oxidation Numbers and Assignment Rules
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Practice Questions
Test your understanding with targeted questions
What is the oxidation number of oxygen in H2O?
💡 Hint: Recall the usual oxidation state of oxygen in compounds.
What is the oxidation number of sodium in NaCl?
💡 Hint: Consider the charge of sodium when it's in an ionic compound.
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the oxidation number of chlorine in ext{Cl}^-?
💡 Hint: Think about the charge of the ion.
In a neutral compound, the sum of the oxidation numbers must equal what?
💡 Hint: Remember what we discussed about the rules of oxidation.
1 more question available
Challenge Problems
Push your limits with advanced challenges
Assign oxidation numbers in this reaction: 3 ext{HCl} + ext{Cl}_2 → 2 ext{H}_2 ext{O} + 2 ext{Cl}^-.
💡 Hint: Carefully track the changes to each atom.
Explain the process of balancing this redox reaction half-equation: MnO4− + Fe^2+ → Mn^2+ + Fe^3+ in acidic conditions.
💡 Hint: Use what you learned about balancing half-reactions in different media.
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