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Dihydrate of alumina is called...

Dihydrate of alumina is called

A

Diaspore

B

Cryolite

C

Bauxite

D

Gypsum

Text Solution

AI Generated Solution

The correct Answer is:
To determine what the dihydrate of alumina is called, let's analyze the options provided: 1. **Understanding the term "dihydrate":** - A dihydrate contains two water molecules for every formula unit of the compound. 2. **Identifying the chemical formula for alumina:** - Alumina is represented by the chemical formula Al₂O₃. 3. **Analyzing the options given:** - **Diaspore**: This is actually Al₂O₃·H₂O (monohydrate of alumina), not a dihydrate. - **Cryolite**: This compound is Na₃AlF₆ and does not relate to alumina's hydration. - **Bauxite**: Bauxite is a mixture of minerals that primarily contains Al₂O₃·2H₂O, which is the dihydrate form of alumina. - **Gypsum**: This is CaSO₄·2H₂O, which is not related to alumina. 4. **Conclusion:** - Based on the analysis, the dihydrate of alumina is called **bauxite**. ### Final Answer: The dihydrate of alumina is called **bauxite**. ---
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