Classic energy problem in open-channel flow

Percobaltates are chemical compounds where the oxidation state of cobalt is +5, which is highest known oxidation state of cobalt. Its general formula is Template:Chem. Impure sodium percobaltate can be produced by the reaction of cobalt(II,III) oxide and sodium oxide; the oxidant is dioxygen:

${\rm {\ 4Co_{3}O_{4}+18Na_{2}O+7O_{2}\rightarrow 12Na_{3}CoO_{4}}}$

The potassium salt can be synthesized similarly. Its magnetic moment has indicated the existence of cobalt(V).Template:Better source

See also

• Caesium hexafluorocobaltate(IV)

References

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