Packet 10: Bonus 2
A compound containing this metal bonded to six cyanides was first synthesized by the paint maker Johann Jacob Diesbach in 1706. For 10 points each:
[10e] Name this metal central to Prussian blue with +2 (“plus two”) and +3 (“plus three”) oxidation states. This metal, cobalt, and nickel are the most common ferromagnets.
ANSWER: iron [or Fe; accept iron (II) or iron (III) or Fe2+ or Fe3+]
[10m] The ferricyanide ion of Prussian blue is an octahedral one of these complexes. These complexes consist of a metallic central atom bonded to several ligands.
ANSWER: coordination complexes
[10h] In medicine, Prussian blue is used as an antidote for heavy metal poisoning due to its high affinity for metal cations described by this adjective. In HSAB theory, this adjective describes large, highly polarizable atoms.
ANSWER: soft [accept soft acids or soft bases or soft Lewis acids or soft Lewis bases; reject “hard and soft acids and bases” or “hard and soft Lewis acids and bases”]
<Editors, Chemistry> | Packet J
| Editions | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|
| 2 | 131 | 11.30 | 81% | 24% | 8% |
Conversion
| Team | Opponent | Part 1 | Part 2 | Part 3 | Total | Parts |
|---|---|---|---|---|---|---|
| Claremont A | UCLA D | 10 | 0 | 0 | 10 | E |
| Claremont B | UCLA B | 10 | 0 | 0 | 10 | E |
| UC Irvine | Claremont C | 10 | 0 | 0 | 10 | E |
| UCLA A | USC B | 10 | 0 | 10 | 20 | EH |
| UCLA C | UC Santa Barbara | 10 | 10 | 0 | 20 | EM |
| UCLA E | USC A | 10 | 0 | 0 | 10 | E |
| UCSD A | UCSD B | 10 | 10 | 10 | 30 | EMH |
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| UK (North) | UK | Y | 5 | 10.00 | 80% | 0% | 20% |
| UK (South) | UK | Y | 7 | 10.00 | 86% | 0% | 14% |
| Northern California | US | Y | 4 | 10.00 | 75% | 0% | 25% |
| Southern California | US | Y | 7 | 15.71 | 100% | 29% | 29% |
| Eastern Canada (1) | US | Y | 5 | 14.00 | 80% | 40% | 20% |
| Eastern Canada (2) | US | Y | 9 | 15.56 | 100% | 44% | 11% |
| Florida | US | Y | 4 | 7.50 | 75% | 0% | 0% |
| Great Lakes | US | Y | 12 | 11.67 | 67% | 42% | 8% |
| Lower Mid-Atlantic | US | Y | 9 | 8.89 | 78% | 11% | 0% |
| Upper Mid-Atlantic | US | Y | 10 | 9.00 | 90% | 0% | 0% |
| Upper Mid-Atlantic | US | Y | 2 | 15.00 | 100% | 50% | 0% |
| Midwest | US | Y | 9 | 12.22 | 89% | 22% | 11% |
| North | US | Y | 3 | 13.33 | 100% | 33% | 0% |
| Northeast | US | Y | 11 | 14.55 | 82% | 55% | 9% |
| Pacific | US | Y | 8 | 10.00 | 75% | 25% | 0% |
| South Central | US | Y | 7 | 11.43 | 86% | 29% | 0% |
| Southeast | US | Y | 13 | 10.00 | 69% | 31% | 0% |
| Upstate NY | US | Y | 6 | 5.00 | 50% | 0% | 0% |