In this lesson you will learn about buffered solution, what they consist of and how they work and also be introduced to the chemical procedure known as titration.
By the end of this lesson, students should be able to:
- define buffered solution
- explain what a buffered solution contains and how it work
- calculate the pH of buffered solution using the a rearranged Ka expression or the Henderson-Hasselbalch equation
- calculate the pH of buffered solutions after addition of an acid or base.
- solve problems involving buffered solutions after addition of an acid or base.
- Use a two-step approach to solving buffered solution problems: (1) a stoichiometric step and (2) equilibrium step.
- define the terms: titration, titrant, equivalence point, end point.
- solve titration problems involving the addition or various volumes of a base or acid in order to generate a pH Curve/Titration Curve
- Use both stoichiometric and equilibrium steps to solve problems involving titration of a strong acid with a strong base
- explain what it actually happens during a titration using a pH Curve
Let’s examine buffered solutions first in the video lesson below.
Below is a worksheet on Buffered solutions. Follow closely the instructions on how to solve buffer problems in the video lesson you just watched. Check your answers against the answer key included.
The second part of this lesson is an examination of acid-base titrations. Please watch the video lesson below and take notes.