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
| Michigan C | CWRU A (UG) | 10 | 0 | 0 | 10 |
| CWRU C (UG) | CWRU B (DII) | 10 | 10 | 0 | 20 |
| West Virginia A (UG) | Miami C (DII) | 10 | 10 | 0 | 20 |
| Michigan B (UG) | Ohio State C (DII) | 10 | 10 | 0 | 20 |
| Michigan A (UG) | Michigan D (UG) | 10 | 10 | 0 | 20 |
| Jefferson County Scholars (DII) | Michigan State A | 0 | 0 | 0 | 0 |
| Ohio State B (DII) | Michigan State B | 10 | 10 | 0 | 20 |
| Miami A (UG) | West Virginia B (UG) | 10 | 10 | 0 | 20 |