What is Aluminium Hydroxide and How is it Used?
The chemical formula in Al(OH)3. The molecular mass is 78 g/mol. Naturally they occur in the form of Mineral gibbsite & its polymorphs. It is white
Crystalline powder, soluble in Acid, Hydrochloric acid, sulfuric acid & alkali & insoluble in water.
It react with acids to form aluminate salts & with bases to forms aluminum hydroxide salt.
Uses :
- In acid indigestion
- Toothpaste filler
- Treatment of peptic ulcer disease
FAQ
i) Explain the process for the formation of Aluminium hydroxide?
Ans: Step-1 – Al2O3.2H2O + 2 NaOH → 2 NaAlO2 + 3 H2O
Step-2 – NaAlO2 + 2 H2O → Al(OH)3 + NaOH
Also, called as Bayer’s process.
ii) What is the nature of Al(OH)3?
Ans- It is amphoteric in nature.
iii) Give two another uses of it.
Ans- • used in manufacturing of glass
- used in cosmetics.
iv) What are the hazardous waste regarding the compound?
Ans- It causes severe problems in respiratory system and skin, irritation in eyes.
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