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Which of the following reagents is commonly used to test for the presence of Fe2+ ions?
  • a)
    Sodium hydroxide (NaOH)
  • b)
    Ammonium hydroxide (NH4OH)
  • c)
    Silver nitrate (AgNO3)
  • d)
    Barium chloride (BaCl2)
Correct answer is option 'B'. Can you explain this answer?
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Which of the following reagents is commonly used to test for the prese...
Ammonium hydroxide is commonly used to test for the presence of Fe2+ ions. When ammonium hydroxide is added to a solution containing Fe2+ ions, a light green precipitate of iron(II) hydroxide [Fe(OH)2] is formed. This precipitation reaction is a characteristic test for Fe2+ ions.
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Which of the following reagents is commonly used to test for the prese...

Ammonium hydroxide (NH4OH)

Ammonium hydroxide is commonly used to test for the presence of Fe2+ ions due to its ability to form a complex with iron ions. When ammonium hydroxide is added to a solution containing Fe2+ ions, a brown precipitate of iron(II) hydroxide, Fe(OH)2, is formed. This reaction is a characteristic test for the presence of Fe2+ ions.

Explanation:
- Ammonium hydroxide reacts with Fe2+ ions to form a brown precipitate of iron(II) hydroxide.
- The brown precipitate confirms the presence of Fe2+ ions in the solution.
- This reaction is commonly used in qualitative analysis to identify the presence of iron ions in a given sample.

Using ammonium hydroxide as a reagent for testing Fe2+ ions is a simple and effective method that provides a visible confirmation of the presence of iron ions in a solution.
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Which of the following reagents is commonly used to test for the presence of Fe2+ ions?a)Sodium hydroxide (NaOH)b)Ammonium hydroxide (NH4OH)c)Silver nitrate (AgNO3)d)Barium chloride (BaCl2)Correct answer is option 'B'. Can you explain this answer?
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