Method used to produce Br gas
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Hydrogen bromide
Industrially, it is mainly produced by the reaction of hydrogen gas with bromine gas at 200–400 °C with a platinum catalyst. However, reduction of bromine with red phosphorus is a more practical way to produce hydrogen bromide in the laboratory: 2 P + 6 H2O + 3 Br2 → 6 HBr + 2 H3PO.
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