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:

$\mathrm{4}\mathrm{C}{\mathrm{o}}_{\mathrm{3}}{\mathrm{O}}_{\mathrm{4}}+\mathrm{1}\mathrm{8}\mathrm{N}{\mathrm{a}}_{\mathrm{2}}\mathrm{O}+\mathrm{7}{\mathrm{O}}_{\mathrm{2}}\mathrm{\to }\mathrm{1}\mathrm{2}\mathrm{N}{\mathrm{a}}_{\mathrm{3}}\mathrm{C}\mathrm{o}{\mathrm{O}}_{\mathrm{4}}$

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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