50. To study how fast caffeine is lost from the body, rabbits are given an 8 mg dose of caffeine. The concentration of c
Posted: Mon Jul 11, 2022 2:03 pm
50. To study how fast caffeine is lost from the body, rabbits are given an 8 mg dose of caffeine. The concentration of caffeine in the blood is then followed over time. The following data is obtained. Use this data to show that caffeine elimination is a first order process and find the rate constant. Time (min) 0.00 25.0 50.0 75.0 100 150 200 250 300 [C8H10N4O2] (µg/ml) 4.00 3.12 2.43 1.89 1.48 0.90 0.55 0.33 0.201 (Answer: the first order graph is linear, so the reaction is first order. From the slope, k 9.96 x 10 1/min, depending on how carefully you graphed the data. Notice the units and that it has a positive value) M