-
Definition of Cr2(SO4)3
1.1 Names
1.1.1 Common name: Chromium sulfate
1.1.2 English name: Chromium sulfate
1.2. Atomic mass: 392.18 g/mol
1.3. Atomic weight: 52 g/mol (Cr), 32 g/mol (S), 16 g/mol (O).
1.3.1 Molecular structure: Each Cr2(SO4)3 molecule contains two Chromium atoms, three Sulfur atoms, and twelve Oxygen atoms.
1.4 Ion structure: Cr2(SO4)3 molecule can dissociate into 2 Cr3+ ions and 3 SO42- ions. -
Properties of Cr2(SO4)3
2.1 Physical properties of Cr2(SO4)3:
State: solid
Color: green to reddish-brown
Smell: odorless
PH level: Not determined
2.2 Chemical properties of Cr2(SO4)3: Cr2(SO4)3 can react with water and dilute acid, react with base to form basic salt. -
Common chemical reactions with Cr2(SO4)3:
Reaction with acid:
Cr2(SO4)3 + 6HCl -> 2CrCl3 + 3H2SO4
Reaction with base:
Cr2(SO4)3 + 12NaOH -> 2Na3[Cr(OH)6] + 3Na2SO4 -
Preparation of Cr2(SO4)3
4.1 Laboratory preparation of Cr2(SO4)3: Not feasible due to high temperature requirement.
4.2 Industrial preparation of Cr2(SO4)3:
Cr2O3 + 3H2SO4 -> Cr2(SO4)3 + 3H2O
In industry, chromium sulfate is usually produced by reacting chromite ore (FeCr2O4) with sulfuric acid.