Kotz & Treichel

    Chapter 18: 15, 25, 27, 39, 43, 59, 63, 67
 

Additional Problems:

1) What is the pH of a 2.0 x 10^-7 M solution of KOH?

2) What is the ratio of acetate ion to acetic acid in a solution that has a pH of 5.0?

3) From D.C. Harris, "Quantitative Chemical Analysis"

This problem demonstrates what would happen if charge balance did not exist in solution. The force, in newtons, between two charges q₁ and q₂, in coulombs, is:

F = -(8.988 x 10⁹) q₁q₂/r²

where r is the distance in meters between the two charges. What is the force between two beakers separated by 1.5 m if one beaker contains 250 mL of solution with 1.0 x 10^-6 M excess negative charge and the other has 250 mL of 1.0 x 10^-6 M positive charge? Note that there are 96,480 C per mol of electrons.

Convert this force to pounds, using the conversion, 1 N = 0.2248 pounds.