17. Acid and Base Equilibrium

Which of the following is an Arrhenius base?

a) Mg(OH)₂

b) BaO

c) CH₃NH₂

d) NH₄⁺

e) H₂SO₄

Out of the following compounds, which can only be an Arrhenius acid?

a) NaCl

b) Sr(OH)₂

c) H₂O

d) CH₃COOH

e) NH₃