Question
The 1966 paper that introduced these compounds touted their use in the Hill reaction, as well as succinate oxidation in bean mitochondria. For 10 points each:
[10m] Name this group of twenty compounds that include Tris and HEPES (“heaps”). Many of these compounds are zwitterionic and are N-substituted derivatives of taurine or glycine.
ANSWER: Good’s buffers [or Good buffers]
[10e] This quantity is between 6 and 8 for most Good’s buffers, making them safer for research. The Henderson–Hasselbalch equation states that pH is equal to this quantity plus the log ratio of two concentrations.
ANSWER: pKa [or the negative logarithm of the acid dissociation constant; or the negative logarithm of Ka, but reject any partial answers that do not include all three parts; reject “Ka” or “acid dissociation constant”]
[10h] The Good’s buffer with the lowest pKa consists of this six-membered heterocycle bound to an ethanesulfonic (“ethane-sulfonic”) acid moiety. Another derivative of this heterocycle is used as a sacrificial catalyst in osmium tetroxide oxidations.
ANSWER: morpholine [accept N-methylmorpholine-N-oxide; accept 2-(N-morpholino)ethanesulfonic acid; prompt on NMO or NMMO; prompt on MES]
<AN/KP, Chemistry>
Summary
| 2024 Chicago Open | 07/28/2024 | Y | 12 | 11.67 | 83% | 33% | 0% |
Data
| First Cause, First Cause, make me young! | AMOGH QUIZ HACK? 英雄联盟 400 PPG 24 TUH | 0 | 0 | 0 | 0 |
| LMM's LLM MLM | when you look this good, you don’t have to know anything | 10 | 10 | 0 | 20 |
| Lisan al-Quib | Are You There, Chat? It's Me, Margaret | 0 | 0 | 0 | 0 |
| NJTRANSit (and bobby, i guess) | Mindgoblin of Little Hobbes | 0 | 10 | 0 | 10 |
| it's the great pumpkinification objection, charlie brown | NJTRANSit (and anwen, I guess) | 0 | 10 | 0 | 10 |
| Punished "Venom" BHSU | var merchants | 10 | 10 | 0 | 20 |
| Lying on a Mattress at Lou’s Apartment in Pilsen, Chicago | Read slowly: A A A A A A A A A A A A A A A Read quickly: A | 0 | 10 | 0 | 10 |
| Les Missourables | SAYYID QUTB, DRIVING THE LONGEST CAR YOU’VE EVER SEEN THROUGH TAHRIR SQUARE | 0 | 10 | 0 | 10 |
| sticking out your guyot for the ridge push; you're so seafloor spread, you're so fracture zone | The Dyatlov Passement incident | 10 | 10 | 0 | 20 |
| The Empire Bikes Back | A Nervy Liberal Nanny Hence | 0 | 10 | 0 | 10 |
| There are buzzable clues everywhere for those with eyes to see | BHSU B | 10 | 10 | 0 | 20 |
| We Need New Names | genAI this, genAI that, have you found your 真爱 yet | 0 | 10 | 0 | 10 |