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Why would hydrogen peroxide react better in the presence of magnesium

  1. Apr 2, 2005 #1
    Why would hydrogen peroxide react better in the presence of magnesium dioxide than in the presence of sand? Also, in human systems, why is it good to have small particles rather than large chunks?
     
  2. jcsd
  3. Apr 2, 2005 #2

    ShawnD

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    I don't think the first one counts as a catalyst question. Magnesium dioxide is a peroxide, so of course it's going to work better. Sand is not a peroxide, and it's very stable; it's so stable that it's basically inert.
     
  4. Apr 2, 2005 #3
    To answer your second question, think about surface area and how that relates to chemical reactions: the larger the surface area the quicker the reaction right? So if you had smaller chunks of something you would have a greater surface area, which in turn means you have a quicker reacion when compared to large chunks.
     
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