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Yttrium hydroxide

Chemical compound From Wikipedia, the free encyclopedia

Yttrium hydroxide
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Yttrium(III) hydroxide is an inorganic compound and an alkali with the chemical formula Y(OH)3.

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Production

Yttrium(III) hydroxide can be produced by reacting yttrium(III) nitrate and sodium hydroxide in aqueous solution:[1]

Y(NO3)3 + 3 NaOH → Y(OH)3↓ + 3 NaNO3

This gives yttrium(III) hydroxide as a white gelatinous precipitate, which can be dried to a white powder.[2]

Chemical properties

Yttrium(III) hydroxide is an alkali, so it can react with acid:

Y(OH)3 + 3 HNO3 → Y(NO3)3 + 3 H2O
2 Y(OH)3 + 3 H2SO4 → Y2(SO4)3 + 3 H2O

The compound absorbs atmospheric carbon dioxide.[2]

When heated, yttrium(III) hydroxide will decompose:

2 Y(OH)3Y2O3 + 3 H2O↑

References

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