Activity 8

Equilibrium: Weak and Strong Acids
use this recitation to make connections among the concepts of strength, concentration, and pH.

Part I: You Initial Ideas
Answer the following True/False questions for yourself.  Then check in with your group.  You dont all have to agree- just get a sense of what others are thinking.  You will re-evaluate your answers at the end of recitation, so it's okay to be unsure at this point.

1.  Strong acids completely dissociate in water - sometimes true
2.Strong acides have lower pH's than weak acids-always true
3.  A ten fold dilution of a strong acidic solution will decrease the pH by 1. - always true
4.  A solution with H3O=0.01 M contains a stronger acid than a solution with H3O =0.001M.-Always false
5.  A solution whose pH is 2.00 contains a stronger acid than a solution whose pH is 3.00- Sometimes true

Part II: Strong and Weak Acids

Open the simulation on your computer.  Ust the 1st tabe to explore how storng and weak acids differ.
1.  A strong acid is one which is virtually 100 % ionised in solution
2.  A weak acid is one which doesnt ionise fully when it is dissolved in water.