Aluminum and iron(III) reaction

  1. I was not expecting there to be a reaction between aluminum metal and a solution of iron chloride. I thought the aluminum would be oxidized and the iron reduced. What is the reaction that is occurring that is creating hydrogen gas on the surface of the aluminum? I know it has to do with aluminum reacting with the hydronium ions in solution but I can't come up with a balanced equation because i don't know what happens to the oxygen from the water. Thanks.
  2. jcsd
  3. SteamKing

    SteamKing 8,622
    Staff Emeritus
    Science Advisor
    Homework Helper

    Perhaps you should do some research on iron (ferric) chloride.

    When it is dissolved in water, it makes an acidic solution. This solution is commonly used as a cheap etchant for making home-made circuit boards. If the solution is strong enough, it will etch metals like aluminum.
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