The equation Cr2O3 + 4HBr -> 2CrBr3 + 3H2O

  1. Detailed information about the equation Cr2O3 + 4HBr -> 2CrBr3 + 3H2O

    • In this chemical equation, Cr2O3 is the oxide of chromium, HBr is hydrobromic acid. When they react with each other, they form CrBr3 (chromium bromide) and H2O (water).
    • According to the balanced equation, 1 mol of Cr2O3 will react with 4 mol of HBr to produce 2 mol of CrBr3 and 3 mol of H2O.

  2. Reaction conditions

    • This reaction requires sufficient temperature to occur. The specific temperature can vary depending on experimental conditions.
    • Sufficient HBr is needed to react with Cr2O3.

  3. Reaction process

    • Cr2O3, when heated to sufficient temperature, will react with the provided HBr to form CrBr3 and H2O.
    • The reaction process takes place from left to right.

  4. Phenomena occur

    • The phenomenon depends on specific reaction conditions. However, some observable phenomena include:
    • The change in color of the reaction mixture.
    • The release of heat, causing the reaction solution to heat up.
    • The formation of CrBr3 solids can be observed if the reaction is performed in solid form.

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