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JAMB Chemistry 2000 Question 22

Question 22

Acids, Bases and Salts

HCl(aq) + H2O(l) ⇌ H3O+(aq) + Cl−(aq)
In the reaction above, Cl−(aq) is the

  1. A.conjugate acid
  2. B.acid
  3. C.conjugate base
  4. D.base
Show the answer and explanation

Answer: C (conjugate base)

Explanation

HCl gives away a proton and becomes Cl−, so Cl− is the conjugate base of the acid HCl.