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Vanadium pentoxide & VO & VO3

Vanadium pentoxide is an orange or brick-red solid.Odorless, tasteless and toxic.The melting point of 690 ° C, density 3.357g/cm3.Orange-red needle-like crystals precipitated when the melt cooling and decompose at 1750 ℃.Slightly soluble in water, generating a pale yellow acidic solution.Vanadium pentoxide is an amphoteric oxide, acidic than alkaline, soluble in strong base to generate vanadate dissolved in acid and the the vanadyl ion VO or VO3 + generate.

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