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Can someone please explain splitting water?

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Can someone please explain splitting water?

Postby syrNYstudent » Sun Mar 27, 2005 12:09 am

I have a test on photosynthesis and mytext or professor did not clearly explain splitting water. Is it when the hydrogen and oxygen are split?
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Postby James » Sun Mar 27, 2005 2:02 am

Photolysis (in the granum): where light separates water into Oxygen- which is released as a by-product, and Hydrogen- which is used furthur in the photosynthesis stages. In other words the water is oxidised.
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Postby MrMistery » Sun Mar 27, 2005 7:07 pm

The molecule of clorophile a, when struck by light(so to say) ejects 2 electrons from it's molecule. These electrons(containing lots of energy) are taken by a transporting chain. The molecule of a clorophile now has the power to extract 2 electrons(which it is lacking) from the water molecule. The reaction is as follows:
H2O +light --> 2H+ +2e- +1/2O2
The electrons are absorbed by the clorophile molecule, oxygen is released into the athmosphere and the protons are later used in photosynthesis

If this is too much info, then sorry :D
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