What is Cr(OH)3? Important knowledge about Cr(OH)3.

  1. Definition of Cr(OH)3

1.1 Names
1.1.1 Common name: Cr(OH)3 is commonly known as Chromium(III) hydroxide or passive mercury.
1.1.2 English name: Cr(OH)3 in English is Chromium(III) hydroxide.
1.2. Atomic mass: Cr(OH)3 consists of Chromium, Hydrogen and Oxygen atoms.
1.3. Molar mass: The total molar mass of Cr(OH)3 is 103.99 g/mol.
1.3.1 Molecular structure: The Cr(OH)3 molecule comprises one Chromium atom, three Hydrogen atoms, and three Oxygen atoms.
1.4 Ion structure: Chromium(III) hydroxide is completely insoluble in water, forming Cr3+ and 3 OH- ions.

  1. Characteristics: Cr(OH)3

2.1 Physical properties of Cr(OH)3
State: Solid
Color: Blue
Odor: Odorless
pH: 6-7 (fairly neutral)
2.2 Chemical properties of Cr(OH)3: Chromium(III) hydroxide is insoluble in water at room temperature.

  1. Common chemical equations involving Cr(OH)3
    Since Cr(OH)3 is insoluble in water, it does not participate in reactions with metals, acids, non-metals or salts.

  2. Preparation of Cr(OH)3

4.1 Laboratory preparation of Cr(OH)3: Chromium(III) hydroxide can be prepared by precipitating Cr3+ from a solution of a Chromium(III) salt by adding a sodium hydroxide (NaOH) solution.
4.2 Industrial preparation of Cr(OH)3: On an industrial scale, Chromium(III) hydroxide is typically produced as a by-product in the process of producing Chromium from Chromium ore.

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