What is the approximate percentage of CO_2 combined with globin?

Dec 5, 2016

About 23 % of carbon dioxide is combined with hemoglobin.

Explanation:

Carbon dioxide is produced by all the cells in the body.

It diffuses into the capillaries where about 7 % of it is transported as $\text{CO"_2"(aq)}$ in the plasma.

(From SlideShare)

The remaining 93 % diffuses into the red blood cells.

In the red blood cells, about 23 % combines chemically with hemoglobin to form carbohemoglobin, ${\text{Hb···CO}}_{2}$.

The other 70 % is converted to $\text{HCO"_3^"-}$ ions, which are then transported in the plasma.