Preparation
Selenium trioxide can be prepared in a number of ways:
The reaction of anhydrous selenic acid and phosphorus pentoxide at 150-160°C
Selenium metal with oxygen in a high frequency glow discharge
- 2Se + 3O2 → 2SeO3
The reaction of liquid sulfur trioxide with potassium selenate
- SO3 + K2SeO4 -> K2SO4 + SeO3
Read more about this topic: Selenium Trioxide
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