23. Chemistry of the Nonmetals

Classify each of the following compounds as an oxide, peroxide, or superoxide.

i) Li₂O          _____________________

ii) RbO₂       _____________________

iii) BaO₂      _____________________

iv) SrO        _____________________

K₂O₂    CaO    CsO₂

Step 1: 2 H₂S (g) + 3 O₂ (g) → 2 SO₂ (g) + 2 H₂O (g)
Step 2: 2 H₂S (g) + 3 O₂ (g) → 2 SO₂ (g) + 2 H₂O (g)

Determine the number of electrons transferred in step one of the Claus process.

Write a balanced equation for the reaction of potassium with oxygen.