When ammonium cyanide (NH4CN) salt is dissolved in water the solution will be:

Correct answer: C. Basic

  • A. Neutral
  • B. Acidic
  • C. Basic
  • D. Both acidic and basic

Explanation

A solution of NH4CN is alkaline because CN− is more strong (conjugate base) than NH4+ (which is conjugate acid).

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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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