For your information, what little water is involved is a by-product of the result of the dehydration of bicarbonate. We use carbonic anhydrase-driven reactions to produce carbon dioxide and water and thereby use a complex exchange of carbon dioxide and oxygen. This is very complex process but has been perfected over thousands of years of use and we employ this operation 24 hours a day, seven days a week, 365 days a year, 10 years a decade, 10 decades a century, 10 centuries a millinia.
In production, I'll admit that the chemical shift of a proton involved in the hydrogen bond causes the bond to bend to about 147 degrees but we have not been that concerned because the bond strength remains above 50%. The water by-product consists of one pair of more tetrahedrally arranged strong hydrogen bonds (one donor and one acceptor) with the remaining hydrogen bond pair (one donor and one acceptor) being either about 6 kJ mol-1 weaker, less tetrahedrally arranged or bifurcated, more than likely due to the anticooperativity effects.
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