There are some differences in the acid-base properties of tetrabromotungsten (WBr4) and tribromotungsten (WBr3). The following is a brief description of their acid-base properties:
Acid-base properties of tungsten tetrabromide:
Tungsten tetrabromide is a very strong Lewis acid that accepts electron pairs. It reacts with bases to form coordination compounds and functions as a catalyst in some chemical reactions. However, it is insoluble in water and therefore does not have the typical acid-base behaviour.
Acid-base behaviour of tungsten tribromide:
Tungsten tribromide shows some acidic behaviour in solution. It is able to react with bases to form the corresponding salts and release bromine gas. In addition, tungsten tribromide can also be involved in some reactions as a Lewis acid catalyst, similar to the role of tetrabromotungsten.
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