A one molar solution is acidic for:
Correct answer: C. FeCl₃
- A. KI
- B. CH₃COONH₄
- C. FeCl₃
- D. None
Explanation
"Ferric chloride (FeCl₃) is the salt of a weak base (Fe(OH)₃) and a strong acid (HCl). The Fe³⁺ ion hydrolyzes water, producing H⁺ ions and making the solution acidic."
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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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