Problem 14-41

A conjugate system is an acid and a base that differ in structure by only 1 H⁺

for example:

HCl / Cl^-
It is a conjugate system where HCl is the acid and Cl⁻ is the base
HCl is the conjugate acid of the base Cl⁻
or
HCl is the acid of the conjugate base Cl⁻

Other examples of conjugate system:
HClO / ClO⁻
NH₃ / NH₄⁺
H₂CO₃ / HCO₃⁻

The following are not conjugate systems:
H₂SO₄ / SO₄²⁻ (more than 1 H⁺ difference)
HClO₃ / HClO₂ (not the same anion)