Preparation
Selenium dioxide is prepared by oxidation of selenium by burning in air, nitric acid or by reaction with hydrogen peroxide, but perhaps the most convenient preparation is by the dehydration of selenous acid.
- 3 Se + 4 HNO3 + H2O → 3 H2SeO3 + 4 NO
- 2 H2O2 + Se → SeO2 + 2 H2O
- H2SeO3 ⇌ SeO2 + H2O
Read more about this topic: Selenium Dioxide
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