3.13. The following data were obtained from enzymatic oxidation of phenol by phenol oxidase at different phenol concentrations. S (mg/l) r (mg/l-h) 10 5 20 30 50 60 80 90 110 130 140 150 7.5 10 12.5 13.7 15 15 12.5 9.5 7.5 5.7 a. What type of inhibition is this? b. Determine the constants V, K, and K... c. Determine the oxidation rate at [S] = 70 mg/l.