Actually the solubility of CO2 (and most other gasses) is lower in warmer water than it is in colder water (that's why warm pop fizzes so much more than cold and why the bubbles form so well in your warm mouth). That means that if the oceans do warm then they are likely to release more CO2 thereby accelerating any warming that is occuring.
Actually to anyone with a biochemistry or organic chemistry background the answer is obvious. The oxygen comes from the water in which the rxn takes place (actually probably in a step 0 where C02 + H20 -> CO3H2 which is carbonic acid). The reducing potential to take the oxygen off comes from NADH being oxidized to NAD+. The actual hydrogen atoms/ions coming from NADH and/or water. Typically the statement that NADH is a co-factor in the rxn is enough to make the above clear to the audience of the New Scientist.
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Actually the solubility of CO2 (and most other gasses) is lower in warmer water than it is in colder water (that's why warm pop fizzes so much more than cold and why the bubbles form so well in your warm mouth). That means that if the oceans do warm then they are likely to release more CO2 thereby accelerating any warming that is occuring.
Actually to anyone with a biochemistry or organic chemistry background the answer is obvious. The oxygen comes from the water in which the rxn takes place (actually probably in a step 0 where C02 + H20 -> CO3H2 which is carbonic acid). The reducing potential to take the oxygen off comes from NADH being oxidized to NAD+. The actual hydrogen atoms/ions coming from NADH and/or water. Typically the statement that NADH is a co-factor in the rxn is enough to make the above clear to the audience of the New Scientist.