Practice!

Sample Problem

Which of the following are considered Arrhenius acids?

NH3

HClO4

KOH

HBr

H2SO4

Solution

Arrhenius acids produce H+ ions in solution. HClO4, HBr, and H2SO4 all satisfy this definition:

HClO4 → H+ + ClO4-

HBr → H+ + Br-

H2SO4 → H+ + HSO4-

The other compounds do not form H+ in solution.