Practice Rules For Assigning Oxidation States (8.1.3)

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6 sample questions

Question 1.
What is the oxidation state of Na in NaCl?
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Think about the charge of Na.
Question 2.
Determine the oxidation state of O in water (H₂O).
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Recall that hydrogen is typically +1.
3Question 3.
What is the oxidation state of a monatomic ion?
- Charge of the ion
- Zero
- Charge of the element
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Think about what a monatomic ion consists of.
4Question 4.
Is the oxidation state of oxygen in H₂O -2?
- True
- False
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Recall the general rules for oxygen.
Question 5.
Determine the oxidation states of all elements in the compound K₂Cr₂O₇.
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Use the sum of the oxidation states to ensure overall neutrality.
Question 6.
Consider the compound NH₄Cl. What are the oxidation states of nitrogen and chlorine?
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Analyze the charges from the ammonium and chloride ions.

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