Co(OH)2 → H2O + CoO
Reactants:
- Co(OH)2 – Cobalt(II) hydroxide


- Other names: Cobaltous hydroxide
, Cobalt hydroxide
, Β-cobalt(II) hydroxide 
- Appearance: Rose-red powder or bluish-green powder

Products:
- H2O – Water, oxidane

- Other names: Water (H2O)
, Hydrogen hydroxide (HH or HOH)
, Hydrogen oxide
Dihydrogen monoxide (DHMO) (systematic name)
, Hydrogen monoxide
, Dihydrogen oxide
, Hydric acid
, Hydrohydroxic acid
, Hydroxic acid
, Hydrol
, Μ-oxido dihydrogen
, Κ1-hydroxyl hydrogen(0) 
- Appearance: White crystalline solid, almost colorless liquid with a hint of blue, colorless gas

- CoO – Cobalt(II) oxide


- Other names: Cobaltous oxide


, Cobalt monoxide 
, Cobalt(ii) oxide
, CI Pigment black 13 
- Appearance: Black powder
; Black-to-green crystals or powder 