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Sugar or oxygen gas

How might you use a radioactive isotope to find out whether the oxygen in CO2 comes from sugar or oxygen gas?
Question asked by: mselajah

Asked on: 11 Aug 2008
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What you need to do is substitute the oxygen in there with an isotope of it that is radioactive.

So then run the reaction and look at the product.

If the carbon dioxide at the end is radioactive then you khow that the oxygen there came from the O2 you used, but if however it is not then it must be that it has come from the sugar.

So there you go a simple way to do this!
By: knowitall
Replied at: 25 Aug 2008
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gas  oxygen  sugar  

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