Iron(III) ions treated with ammonia produce which observation?

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Multiple Choice

Iron(III) ions treated with ammonia produce which observation?

Explanation:
When iron(III) ions are treated with ammonia, the solution becomes basic and hydroxide ions from NH3 (via NH3 + H2O ⇌ NH4+ + OH−) react with Fe3+ to form iron(III) hydroxide, Fe(OH)3, which appears as a reddish‑brown, gelatinous precipitate. This precipitate is insoluble in excess ammonia because ferric hydroxide is not amphoteric and does not dissolve in base. So the observed change is a red/brown precipitate that stays even when more ammonia is added.

When iron(III) ions are treated with ammonia, the solution becomes basic and hydroxide ions from NH3 (via NH3 + H2O ⇌ NH4+ + OH−) react with Fe3+ to form iron(III) hydroxide, Fe(OH)3, which appears as a reddish‑brown, gelatinous precipitate. This precipitate is insoluble in excess ammonia because ferric hydroxide is not amphoteric and does not dissolve in base. So the observed change is a red/brown precipitate that stays even when more ammonia is added.

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