Question
The first stage of the Ostwald process reacts this compound with oxygen. For 10 points each:
[10e] Name this compound, the output of the Haber–Bosch process with formula NH3.
ANSWER: ammonia [reject "ammonium"]
[10h] This metal, alloyed with 10% rhodium, serves as the main catalyst in the Ostwald process. Until 2019, the kilogram was defined based on a cylinder made of this element combined with 10% iridium.
ANSWER: platinum [or Pt]
[10m] Water and this compound are the end products of the Ostwald process. This compound can be mixed with hydrochloric acid to produce a mixture capable of dissolving platinum and gold.
ANSWER: nitric acid [or HNO3]
<Science - Chemistry>
Data
Summary
| Tournament | Edition | Exact Match? | Heard | PPB | Easy % | Medium % | Hard % |
|---|---|---|---|---|---|---|---|
| 2025 PACE NSC | 06/07/2025 | Y | 37 | 20.54 | 100% | 60% | 46% |