Solution of Na₂SO₄ is?
Correct answer: C. Neutral
- A. Basic
- B. Acidic
- C. Neutral
- D. Not predictable
Explanation
The solution of Na₂SO₄ is neutral because sodium sulfate is a salt resulting from the neutralization of a strong acid (sulfuric acid, H₂SO₄) and a strong base (sodium hydroxide, NaOH). When dissolved in water, neither H⁺ nor OH⁻ ions are released, leading to a neutral pH. The other options are incorrect because they imply the presence of excess H⁺ or OH⁻ ions, which are not present in this case.
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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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