Concept explainers
(a)
Interpretation: The chemical changes responsible for the occurrence of precipitate on adding the given base to the solution of aluminium chloride and disappearance of the precipitate on further addition of base is to be stated. Also, the reason for the observation of addition of base of ferric chloride being different than that of aluminium chloride is to be stated.
Concept introduction: Aluminium hydroxide on addition of base reacts with the hydroxide of base to form a soluble ion.
To determine: The chemical changes responsible for the occurrence of precipitate on adding the potassium hydroxide to the solution of aluminium chloride and disappearance of the precipitate on further addition of base.
(b)
To determine: The reason for the observation of addition of base of ferric chloride being different than that of aluminium chloride.
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