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Reaction of Acids and Bases with Metals

Acidity of al...

Question

Acidity of aluminum hydroxide is:

A

1

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B

2

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C

4

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D

3

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Solution

The correct option is D 3
The chemical formula of Aluminium hydroxide is $A l (O H)_{3}$ . When it react with any acid.

$A l (O H)_{3} + 3 H C l \to A l C l_{3} + 3 H_{2} O$

It required 3 acidic $H^{+}$ ions to neutralize therefore its acidity is $3$ .
Option (D).

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