Question
A radio-frequency pulse creates a spin-flip transition between energy levels in this technique. For 10 points each:
[10e] Name this form of spectroscopy that applies an external magnetic field to analyze nuclei.
ANSWER: NMR spectroscopy [or nuclear magnetic resonance spectroscopy]
[10m] When analyzing compounds in NMR, hydroxyl and amine protons have a notoriously broad range for this value. This quantity, the ratio of the change in frequency to the reference frequency, is usually given in ppm.
ANSWER: chemical shift [prompt on delta; prompt on shift]
[10h] This is the simplest compound added to a sample in proton NMR in order to isolate hydroxyl or amine peaks. Exchangeable labile protons disappear following the addition of this compound in its namesake “shake.”
ANSWER: heavy water [or D2O; accept heavy water shake; reject “water” or “H2O”]
<Chemistry>
Summary
| 2024 ACF Winter at Clemson | 2024-11-16 | Y | 9 | 12.22 | 78% | 44% | 0% |
| 2024 ACF Winter at Clemson | 2024-11-16 | Y | 7 | 11.43 | 14% | 100% | 0% |
| 2024 ACF Winter at Ohio State | 2024-11-16 | Y | 1 | 30.00 | 100% | 100% | 100% |
Data
| Alabama A | Auburn B | 10 | 10 | 0 | 20 |
| Clemson A | South Carolina A | 10 | 0 | 0 | 10 |
| Auburn C | Georgia A | 0 | 10 | 0 | 10 |
| Georgia Tech A | Georgia Tech D | 10 | 0 | 0 | 10 |
| Georgia Tech A | Tennesse B | 0 | 0 | 0 | 0 |
| Georgia Tech A | Tennesse B | 0 | 0 | 0 | 0 |
| Georgia Tech A | Georgia Tech D | 10 | 0 | 0 | 10 |
| Georgia Tech F | Georgia Tech B | 0 | 0 | 0 | 0 |
| Georgia Tech F | Georgia Tech E | 10 | 0 | 0 | 10 |
| Georgia Tech F | Georgia Tech E | 10 | 0 | 0 | 10 |
| Georgia Tech F | Georgia Tech B | 0 | 0 | 0 | 0 |
| Tennesse B | Georgia Tech C | 10 | 0 | 0 | 10 |
| Georgia Tech E | Georgia A | 10 | 10 | 0 | 20 |
| Tennesse A | Auburn B | 0 | 10 | 0 | 10 |
| Tennesse A | Auburn C | 10 | 10 | 0 | 20 |
| Tennesse A | Auburn C | 10 | 10 | 0 | 20 |
| Tennesse A | Auburn B | 0 | 10 | 0 | 10 |
| Emory B | Clemson A | 0 | 0 | 0 | 0 |
| Emory B | Clemson A | 0 | 0 | 0 | 0 |
| Emory B | Tusculum A | 10 | 0 | 0 | 10 |
| Emory B | Tusculum A | 10 | 0 | 0 | 10 |
| Auburn A | South Carolina A | 0 | 10 | 0 | 10 |
| Georgia Tech B | Emory A | 0 | 10 | 0 | 10 |
| Emory B | Clemson A | 0 | 10 | 0 | 10 |
| Emory B | Clemson A | 0 | 10 | 0 | 10 |
| Emory B | Tusculum A | 10 | 10 | 0 | 20 |
| Emory B | Tusculum A | 10 | 10 | 0 | 20 |
| Georgia Tech A | Georgia Tech D | 10 | 10 | 0 | 20 |
| Georgia Tech A | Tennesse B | 0 | 10 | 0 | 10 |
| Georgia Tech A | Tennesse B | 0 | 10 | 0 | 10 |
| Georgia Tech A | Georgia Tech D | 10 | 10 | 0 | 20 |
| Georgia Tech F | Georgia Tech B | 0 | 10 | 0 | 10 |
| Georgia Tech F | Georgia Tech E | 10 | 10 | 0 | 20 |
| Georgia Tech F | Georgia Tech E | 10 | 10 | 0 | 20 |
| Georgia Tech F | Georgia Tech B | 0 | 10 | 0 | 10 |
| Tennesse A | Auburn B | 0 | 10 | 0 | 10 |
| Tennesse A | Auburn C | 10 | 10 | 0 | 20 |
| Tennesse A | Auburn C | 10 | 10 | 0 | 20 |
| Tennesse A | Auburn B | 0 | 10 | 0 | 10 |
| Georgia Tech D | Tusculum A | 0 | 10 | 0 | 10 |