A salt of a weak acid & a weak base is:

Correct answer: C. NH₄NO₂

  • A. NH₄NO₃
  • B. NaCN
  • C. NH₄NO₂
  • D. K₂CO₃

Explanation

Ammonium nitrite (NH₄NO₂) is formed from the reaction of a weak base, ammonia (NH₃ or NH₄OH), and a weak acid, nitrous acid (HNO₂).

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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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