The reaction A → B + C is known to be first order in A. Below are data showing the concentration of A as a function of reaction time.
| Time, h | [A], M |
| 0 | 2.50 x 10^-1 |
| 1 | 2.21 x 10^-1 |
| 2 | 1.95 x 10^-1 |
| 4 | 1.52 x 10^-1 |
| 8 | 9.23 x 10^-2 |
| 10 | 7.19 x 10^-2 |
| 12 | 5.61 x 10^-2 |
(a) What is the average rate of reaction between 1 and 4 h? Report the units as well as the numbers.
(b) Plot the data above, showing the concentration of A as a function of the time. From your graph, determine the instantaneous rate of reaction at 8 h. Report the units as well as the numbers.
(c) Plot ln [A] versus time. Estimate the rate constant for this first-order reaction from your graph. Report the units as well as the numbers
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