Multiple choice

Which of the following is a base?

  1. Na2O

  2. NaOH

  3. NH4OH

  4. All of the above

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

Na2O (sodium oxide), NaOH (sodium hydroxide), and NH4OH (ammonium hydroxide) all exhibit basic properties in aqueous solutions. Therefore, all of the listed options are bases.