Physical Chemistry #23: Ionic Equilibria and Brønsted-Lowry Acid/Base Theory (Slides and Tasks)

In this lesson we introduce the Brønsted-Lowry theory of acids and bases, ionic equilibria and the concept of conjugate pairs. This is lesson twenty three in our physical chemistry series for Unit 7: Equilibria (from the Cambridge International AS Chemistry Curriculum (9701) 2019-2021 curriculum).

LESSON OBJECTIVE: Understand the Brønsted-Lowry theory of acids and bases. Describe how the strength and concentration of acids and bases affects pH.

LEARNING OUTCOMES (taken from the Cambridge International AS and A Level Chemistry (9701) 2019-2021 curriculum):
7.2 Ionic equilibria
a) show understanding of, and use, the Brønsted-Lowry theory of acids and bases, including the use of the conjugate acid, conjugate base (acid-I base-I, acid-II base-II) concept

b) explain qualitatively the differences between strong and weak acids and bases and the pH values of their aqueous solutions in terms of the extent of dissociation