Question
For the autoionization of water, a constant named for this state is approximately equal to 10-to-the-minus-14. For 10 points each:
[10e] Identify this state of a reaction with the same forward and backward rates, meaning it exhibits no net change.
ANSWER: equilibrium [accept equilibrium constant]
[10m] The change in this quantity for a reaction can be calculated as minus RT times the natural log of the equilibrium constant. The change in this quantity can also be calculated as delta-H minus T delta-S.
ANSWER: Gibbs free energy [accept change in Gibbs free energy; prompt on G or delta-G or change in free energy]
[10h] This equation can be used to determine the equilibrium constant’s dependence on temperature, as this equation states the derivative of K-eq (“K-e-q”) with respect to temperature equals the standard enthalpy change over R T-squared.
ANSWER: van ‘t Hoff equation
<Chemistry>
Summary
| 2024 ACF Fall at Cornell | fall | Y | 9 | 13.33 | 100% | 22% | 11% |
| 2024 ACF Fall at Ohio State | fall | Y | 8 | 16.25 | 88% | 75% | 0% |
| 2024 ACF Fall at Washington | fall | Y | 6 | 13.33 | 83% | 50% | 0% |
| 2024 ACF Fall at Georgia | fall | Y | 11 | 12.73 | 73% | 46% | 9% |
| 2024 ACF Fall at North Carolina | fall | Y | 9 | 13.33 | 89% | 44% | 0% |
| 2024 ACF Fall at Claremont Colleges | fall | Y | 5 | 22.00 | 100% | 100% | 20% |
| 2024 ACF Fall at Rutgers | fall | Y | 8 | 16.25 | 88% | 75% | 0% |
Data
| Claremont C | UCLA C | 10 | 10 | 0 | 20 |
| UCLA E | UCLA A | 10 | 10 | 0 | 20 |
| Claremont A | UCLA B | 10 | 10 | 0 | 20 |
| UCLA D | UCSD | 10 | 10 | 10 | 30 |
| Claremont B | USC | 10 | 10 | 0 | 20 |