What is Cr2(SO4)2? Important knowledge about Cr2(SO4)2.

  1. 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.

  2. 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.

  3. 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

  4. 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.

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