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Topic: Rate of reaction?  (Read 842 times)

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Offline elksonova

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Rate of reaction?
« on: March 28, 2019, 05:34:26 PM »
Hello, all. I am doing an experiment testing the rate of H2O2 decomposition by measuring volume of O2 formed in the reaction.

The decomposition equation looks like this:

H2O2  :rarrow: H2O + 1/2O2

I have calculated the rates already for the production of oxygen, but would I have to double these values to get the rate of decomposition for H2O2, as it is hydrogen peroxide and oxygen is in a 2:1 ratio?

Thanks!
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Offline Mitch

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Re: Rate of reaction?
« Reply #1 on: March 28, 2019, 06:13:03 PM »
I don't think it is doubled, it might get halved. Can you show your math?
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Offline mjc123

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Re: Rate of reaction?
« Reply #2 on: March 29, 2019, 05:35:39 AM »
No, it's doubled. Decomposing one mole of H2O2 gives half a mole of O2, so d[O2]/dt = -1/2*d[H2O2]/dt
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