Chapter 16 Flashcards

Flashcards on Common Ion Effect and Buffer Solutions

Common Ion Effect

The presence of a common ion suppresses the ionization of a weak acid or weak base.

Buffer Solution

A chemical system that resists pH changes by neutralizing added acid or base.

Henderson Hasselbalch Equation

The equation that helps to simplify solutions with the common ion effect.

Buffer Capacity

How much acid or base a buffer can effectively neutralize.

Buffer Range

The pH range over which a particular acid and conjugate base can be effective as a buffer.

Weak Acid

Neutralizes added base in a buffer solution.

Conjugate Base

Neutralizes added acid in a buffer solution

Buffer Effectiveness

Most effective when the concentrations of acid and conjugate base are equal and high.

pKa

The effective range for a buffering system is generally one pH unit on either side of this value.

Common Ion Effect

Follow Le Chatelier’s Principle