What is the primary oxidation state of iron in Fe2O3?

Practice Questions

Q1
What is the primary oxidation state of iron in Fe2O3?
  1. +1
  2. +2
  3. +3
  4. +4

Questions & Step-by-Step Solutions

What is the primary oxidation state of iron in Fe2O3?
  • Step 1: Identify the compound, which is Fe2O3.
  • Step 2: Recognize that Fe represents iron and O represents oxygen.
  • Step 3: Know that oxygen typically has an oxidation state of -2.
  • Step 4: Since there are 3 oxygen atoms in Fe2O3, calculate the total oxidation state from oxygen: 3 * (-2) = -6.
  • Step 5: The compound Fe2O3 must have a total charge of 0.
  • Step 6: Let the oxidation state of iron (Fe) be x. There are 2 iron atoms, so the total oxidation state from iron is 2x.
  • Step 7: Set up the equation: 2x + (-6) = 0.
  • Step 8: Solve for x: 2x = 6, so x = 3.
  • Step 9: Conclude that the oxidation state of iron in Fe2O3 is +3.
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