Multiple choice

Which of the following is a Bronsted-Lowry base, but not an Arrhenius base?

  1. NaOH

  2. NH3

  3. Ca(OH)2

  4. KOH

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Arrhenius bases furnish OH- ions in their aqueous solutions. Bronsted-Lowry bases are proton acceptors. NH3 will not release OH- ions, but accept a proton to form NH4+. Hence, NH3 is a Bronsted-Lowry base, but not an Arrhenius base.