In this lesson you will learn about both polyprotic acids as well as the acidic, basic or neutral character of salt solutions.
By the end of this lesson, students should be able to:
- define polyprotic acid and explain how a polyprotic acid dissociates/ionizes (stepwise).
- write dissociation reactions for polyprotic acids.
- With the aid of the table of Ka and Kb values for monoprotic and polyprotic acids, calculate the pH of aqueous solutions of monoprotic or polyprotic acids.
- apply a systematic problem solving approach for problems involving polyprotic acids
- explain the concept of hydrolysis of water by cations or anions of dissolved salts.
- predict the acidity of a salt solution by identifying cations and/or anions capable of hydrolyzing water and also by comparing the magnitude of the Ka and Kb values
- arrange salt solutions in order of most acidic to most basic.
The video lesson below introduces Polyprotic Acids. Please watch and take notes.
The second part of this lesson introduces the Acid-Base Properties of Salt Solutions. Please watch the video lesson below and take notes.
Now that you have taken notes and watched the video lesson, please answer all problems in the worksheet below: