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Homework answers / question archive / 1
1. Using the given data, calculate the rate constant of this reaction.
A+B---------> C+D
| Trial | [A](M) | [B](M) | Rate (M/s) |
| 1 | .390 | .390 | .0127 |
| 2 | .390 | 1.01 | .0926 |
| 3 | .624 | .390 | .0219 |
K= Units= (M. s-1 M-2,s-1 s-1 M-1,s-1)
THE ANSWER IS NOT : 0.0900 M. s-1
2. The rate constant for this first-order reaction is 0.340 s–1 at 400 °C.
A------> Products
How long (in seconds) would it take for the concentration of A to decrease from 0.850 M to 0.260 M?
Answer is not: 7.85 sec
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