Question
Chemical potential only depends on the activity of ions that are denoted by this two-letter abbreviation. For 10 points each:
[10m] Name this parenthetical two-letter notation used in chemical reaction formulas to indicate ions that are hydrated.
ANSWER: aq [or (aq) or A-Q; prompt on aqueous]
[10e] In the simplest double displacement reaction, two aqueous ions react and undergo this process, forming a solid product that drops out of solution.
ANSWER: precipitation [or forming a precipitate]
[10h] When hydrated ions are slowly frozen, the ice crystallizes around the salts to form these host–guest complexes. According to a once-popular, now mostly debunked theory, frozen methane that’s released from these complexes could lead to runaway climate change.
ANSWER: clathrates [or ionic clathrate hydrates; or methane clathrates]
<Adam Silverman, Science - Chemistry> ~22776~ <Editor: Adam Silverman>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2024 PACE NSC | 06/08/2024 | Y | 36 | 19.72 | 100% | 58% | 39% |