Like many metals, aluminum reacts with a halogen (here the orange-brown liquid Br₂) to give a metal halide, aluminum bromide. (The white solid on the lip of the beaker at the end of the reaction is Al₂Br₆.)

What mass of Br₂, in grams, is required for complete reaction with 2.56 g of Al? What mass of white, solid Al₂Br₆ is expected?

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Before reaction After reaction 2 Al(s) + 3 Br₂(l) → Al₂Bro(s) Photos: Cengage Learning/Charles D. Winters