The salt that gives an acidic aqueous solution is:
Correct answer: C. NH₄NO₃
- A. CH₃COONa
- B. KNO₂
- C. NH₄NO₃
- D. NaI
Explanation
Ammonium nitrate (NH₄NO₃) is the salt of a weak base (NH₃) and a strong acid (HNO₃). The ammonium ion (NH₄⁺) acts as a weak acid in water, donating a proton and making the solution acidic.
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