Yttrium(III) hydroxide is an
inorganic compound
In chemistry, an inorganic compound is typically a chemical compound that lacks carbon–hydrogen bonds, that is, a compound that is not an organic compound. The study of inorganic compounds is a subfield of chemistry known as '' inorganic chemist ...
and an
alkali
In chemistry, an alkali (; from ar, القلوي, al-qaly, lit=ashes of the saltwort) is a basic, ionic salt of an alkali metal or an alkaline earth metal. An alkali can also be defined as a base that dissolves in water. A solution of a ...
with the chemical formula Y(OH)
3.
Production
Yttrium(III) hydroxide can be produced by reacting
yttrium(III) nitrate and
sodium hydroxide
Sodium hydroxide, also known as lye and caustic soda, is an inorganic compound with the formula NaOH. It is a white solid ionic compound consisting of sodium cations and hydroxide anions .
Sodium hydroxide is a highly caustic base and alkali ...
in aqueous solution:
[田俐，陈稳纯，陈琳 等. 水热法合成氢氧化钇纳米管. 无机材料学报. 2009. 24(2): 335-339]
: Y(NO
3)
3 + 3 NaOH → Y(OH)
3↓ + 3 NaNO
3
This gives yttrium(III) hydroxide as a white gelatinous precipitate, which can be dried to a white powder.
Chemical properties
Yttrium(III) hydroxide is an alkali, so it can react with
acid
In computer science, ACID ( atomicity, consistency, isolation, durability) is a set of properties of database transactions intended to guarantee data validity despite errors, power failures, and other mishaps. In the context of databases, a sequ ...
:
: Y(OH)
3 + 3 HNO
3 → Y(NO
3)
3 + 3 H
2O
: 2 Y(OH)
3 + 3 H
2SO
4 → Y
2(SO
4)
3 + 3 H
2O
The compound absorbs atmospheric
carbon dioxide
Carbon dioxide (chemical formula ) is a chemical compound made up of molecules that each have one carbon atom covalently double bonded to two oxygen atoms. It is found in the gas state at room temperature. In the air, carbon dioxide is transpar ...
.
When heated, yttrium(III) hydroxide will decompose:
: 2 Y(OH)
3 →
Y2O3 + 3 H
2O↑
References
{{yttrium compounds
Yttrium compounds
Hydroxides