The rate of the reaction between hemoglobin (Hb) and carbon monoxide (CO) was studied at 20oC. The following data were collected, with all concentration units in mmol/ L. (A hemoglobin concentration of 2.21 mmol/ L is equal to 2.21 × 10-6 mol/ L.)

a. Determine the orders of this reaction with respect to Hb and CO.
b. Determine the rate law.
c. Calculate the value of the rate constant.
d. What would be the initial rate for an experiment with [Hb]0 = 3.36 mmol/ L and [CO]0 = 2.40 mmol/ L?

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Initial Rate (μmol L-l s-1) 0.619 1.24 3.71 Hblo ICOlo (cmol/L) 1.00 1.00 3.00 (pmol/L) 2.21 4.42 4.42