Question
Other than “the massive fire,” the main reason you shouldn’t run a battery on the thermite reaction is that it only provides 1.6 of these units. For 10 points each:
[10e] Name this SI unit for the electric potential difference across a battery.
ANSWER: volts [or V; accept millivolts]
[10m] The voltage is low because fully reducing ferric iron in this oxidation state is unfavorable. Aluminum acquires this charge in the thermite reaction.
ANSWER: +3 [or plus-three or positive three; prompt on three by itself]
[10h] You’d get twice the voltage from a thermite battery between aluminum and the plus-three ion of this element, which has the highest electron affinity and electronegativity of any metal. This transition metal’s only other common oxidation state is plus-one.
ANSWER: gold [or Au]
<Adam Silverman, Science - Chemistry> ~22804~ <Editor: Adam Silverman>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2024 PACE NSC | 06/08/2024 | Y | 35 | 17.43 | 83% | 63% | 29% |