JAMB Chemistry 1993 Question 20

Question 20

Acids, Bases and Salts

NH3 + H3O+ → NH4+ + H2O. It may be deduced from the reaction above that

  1. A.a redox reaction has occurred
  2. B.H3O+ acts as an oxidizing agent
  3. C.H3O+ acts as an acid
  4. D.water acts as an acid
Show the answer and explanation

Answer: C (H3O+ acts as an acid)

Explanation

H3O+ gives a proton (H+) to NH3. A proton donor is an acid, and no oxidation numbers change.