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Definition of Cr(OH)2
Cr(OH)2 is the chemical formula of Chromium Hydroxide. Chromium Hydroxide consists of the Chromium base and water, forming a basic compound capable of reacting with acids.
1.1 Names
1.1.1 Common name: Chromium Hydroxide
1.1.2 English name: Chromium Hydroxide
1.2 Atomic weight: 52.00 g/mol (Chromium) and 17.00 g/mol (Hydroxide)
1.3 Molar mass: 118.01 g/mol
1.3.1 Molecular structure: A molecule of Chromium Hydroxide consists of one Chromium atom (Cr) and two Hydroxide groups (OH).
1.4 Ionic structure: Chromium Hydroxide is an ionic compound consisting of Cr2+ ions and OH- ions. -
Properties of Cr(OH)2
2.1 Physical properties of Cr(OH)2
State: solid
Color: blue
Smell: odorless
pH Level: strong base
2.2 Chemical properties of Cr(OH)2: Chromium Hydroxide can react with acids to form salts and water. -
Common chemical equations involving Cr(OH)2
Chromium Hydroxide does not usually participate in reactions with metals, non-metals, or salts. However, it can react with acids as follows:
Cr(OH)2 + 2HNO3 -> Cr(NO3)2 + 2H2O
Cr(OH)2 + 2HCl -> CrCl2 + 2H2O
Cr(OH)2 + H2SO4 -> CrSO4 + 2H2O -
Preparation of Cr(OH)2
4.1 Laboratory preparation of Cr(OH)2
Heat Chromic acid solution with Sodium Hydroxide solution.
Cr2(SO4)3 + 12NaOH -> 2Cr(OH)3 + 3Na2SO4 + 6H2O
4.2 Industrial preparation of Cr(OH)2
In industry, Chromium Hydroxide is usually produced from the precipitation of Chromium in water.