Final answer:
The statement that a conjugate acid-base pair forms a buffer solution is true. Buffers resist pH changes and are composed of a weak acid and its salt, or a weak base and its conjugate acid.
Step-by-step explanation:
A conjugate acid-base pair is crucial for the formation of a buffer solution. The statement that a conjugate acid-base pair forms a buffer solution is indeed True. Buffer solutions have the ability to resist changes in pH when small quantities of strong acids or bases are introduced into the system.
This buffering action is due to the presence of both a weak acid and its conjugate base, or a weak base and its conjugate acid, which can neutralize added acids or bases, respectively.
For example, a mixture of acetic acid (CH3COOH) and sodium acetate (CH3COONa) constitutes a buffer solution. The acetic acid acts as the weak acid, and the sodium acetate provides the conjugate base, acetate ion.
Similarly, a mixture of ammonia (NH3) and ammonium chloride (NH4Cl) is a buffer system made up of a weak base (ammonia) and its conjugate acid (ammonium ion).