Tuesday, 7 May 2013

2.18 describe the laboratory preparation of oxygen from hydrogen peroxide, using manganese(IV) oxide as a catalyst

hydrogen peroxide is put in a conical flask with manganese(IV) oxide as a catalyst. Plus there could be some water to diloute the hydrogen peroxide.
Hydrogen peroxide > water + oxygen
2H2O2 > 2H2O + O2
You can then collect oxygen by downwards displacement method.

This video is helpful:
http://www.youtube.com/watch?v=nkeniDKGs6Q
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8 comments:

  1. Unknown15 March 2014 at 00:37

    shouldn't oxygen be collected via downwards delivery, or upwards displacement?

    ReplyDelete
  2. HannahHelp24 May 2014 at 08:16

    I think thats what I've said? :)

    ReplyDelete
  3. Unknown24 May 2014 at 17:52

    ahhh sorry haha I read it wrong :) your blog was so helpful for my exam, thanks! :)

    ReplyDelete
  4. Unknown26 May 2014 at 10:52

    this is so helpful. thank you for making this, i have used so many times and it is so clear, you are a life saver and a genius.

    ReplyDelete
  5. Unknown23 November 2016 at 13:29

    I am so happy you're in my life!!!!!!!!!!!

    ReplyDelete
  6. WhatEvenIsThis17 May 2017 at 03:21

    i think i would fail without this!

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