The solution of FeSO₄ is
Correct answer: A. Acidic
- A. Acidic
- B. Basic
- C. Neutral
- D. Amphoteric
Explanation
Iron(II) sulfate, FeSO₄, when dissolved in water, undergoes hydrolysis. The sulfate ion (SO₄²⁻) comes from a strong acid (H₂SO₄), while the Fe²⁺ ion is a moderately strong acid when hydrated. This results in an overall acidic solution due to the release of H⁺ ions. Option A is correct. Option B is incorrect because basic solutions typically arise from salts of weak acids and strong bases, which is not the case here. Option C is incorrect as the solution is not neutral; it is acidic due to the dissociation of FeSO₄. Option D is incorrect because FeSO₄ does not exhibit amphoteric properties.
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About Acids, Bases and Salts
Acid and base behaviour is explained through the Bronsted-Lowry transfer of protons and the Lewis donation or acceptance of electron pairs. The topic includes pH, pOH, ionisation and water equilibrium, plus salt formation and hydrolysis, where a salt solution may become acidic, basic or neutral.
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