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Which Group III hydroxide precipitate is amphoteric and dissolves completely in an excess of aqueous — Qualitative and Quantitative Analysis Chemistry Question

Question

Which Group III hydroxide precipitate is amphoteric and dissolves completely in an excess of aqueous $NaOH$ to form a soluble clear solution?

Answer: C

💡 Solution & Explanation

$Al(OH)_3$ is a gelatinous white precipitate that is amphoteric. It dissolves in excess $NaOH$ to form soluble sodium aluminate ($Na[Al(OH)_4]$).

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