PhET Computer Simulation Activity: Acid-Base Solutions and pH Scale
PhET Investigation of Acids-Bases
Name: Habiba Abdelafattah Elaaidy
Part A.
Introduction
1. Take a few minutes to play with the sim (http://phet.colorado.edu/en/simulation/acid-
base-solutions). Check out both the Introduction and Custom Solution tabs. Explore
what factors affect pH. List the factors you found that affect pH.
Investigating Concentration Changes
2. a. Create a strong acid solution in the “Custom Solution” tab.
b. Draw bar graphs for Initial and Equilibrium concentrations.
Hints: No calculator needed – try the ‘Equilibrium Concentration’ view.
Don’t forget to label your graphs!
Initial Concentrations Equilibrium Concentrations
c.
c. What equilibrium concentrations are affected by changing the initial concentration?
a.
H3O
3. a. Create a weak acid solution in the “Custom Solution” tab.
b. Draw bar graphs for Initial and Equilibrium concentrations.
Hints: No calculator needed – try the ‘Equilibrium Concentration’ view.
Don’t forget to label your graphs!
Initial Concentrations Equilibrium Concentrations
