P7-4A When arterial blood enters a tissue capillary, it exchanges oxygen and carbon dioxide with its environ- ment, as shown in this diagram. OO Hb Hb Hb OO O Hb OO Hb Hb OO Hb OO Hb OO Hb OO OO The kinetics of this deoxygenation of hemoglobin in blood was studied with the aid of a tubular reactor by Nakamura and Staub (J. Physiol., 173, 161). k 1 HbO2 Hb + 02 k-1 Although this is a reversible reaction, measurements were made in the initial phases of the decompo- sition so that the reverse reaction could be neglected. Consider a system similar to the one used by Nakamura and Staub: the solution enters a tubular reactor (0.158 cm in diameter) that has oxygen elec- trodes placed at 5-cm intervals down the tube. The solution flow rate into the reactor is 19.6 cm3/s with CAO = 2.33 x 10 6 mol/cm3. Electrode position 1 2 3 4 5 6 7 Percent decomposition of HbO2 0.00 1.93 3.82 5.68 7.48 9.25 11.00 (a) Using the method of differential analysis of rate data, determine the reaction order and the forward specific reaction-rate constant k, for the deoxygenation of hemoglobin. (b) Repeat using regression