hard · Enhanced ACT Science
**Forward and Reverse Reaction Rates (mol/(L·s)) vs Temperature** | Temperature (°C) | Forward rate | Reverse rate |
| --- | --- | --- |
| 20 | 0.10 | 0.46 |
| 30 | 0.18 | 0.38 |
| 40 | 0.30 | 0.30 |
| 50 | 0.51 | 0.24 |
| 60 | 0.88 | 0.19 |
A system is at equilibrium when the forward and reverse reaction rates are equal. According to the data, at which temperature is this system at equilibrium?
- 30 °C
- 40 °C
- 50 °C
- 60 °C
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