Module 5

Question 1

acid dissociation constant Ka

Answer 1

The equilibrium constant that shows the extent of dissociation of
a weak acid. For a weak acid HA(aq),
Ka= [H+][A-]/[HA]


Question 2

acid–base pair

Answer 2

A pair of two species that transform into each other by gain or loss of a proton.

Question 3

pH

Answer 3

The expression, pH = –log[H+(aq)].