Homework Assignment #12

Due February 23, 2018 by 11:10 a.m.

1) A solution of perchloric acid is prepared that has a molar concentration equal to the fourth and fifth digits of your Student ID Number divided by 105. What are the hydronium ion and hydroxide ion concentrations in that solution at 25 °C?

2) A solution of nitric acid is prepared that has a molar concentration equal to the fourth and fifth digits of your Student ID Number divided by 104. What are the hydronium ion and hydroxide ion concentrations in that solution at 25 °C?

3) A solution of potassium hydroxide is prepared that has a molar concentration equal to the fourth and fifth digits of your Student ID Number divided by 103. What are the hydronium ion and hydroxide ion concentrations in that solution at 25 °C?

4) A solution of barium hydroxide is prepared that has a molar concentration equal to the fourth and fifth digits of your Student ID Number divided by 105. What are the hydronium ion and hydroxide ion concentrations in that solution at 25 °C? Assume complete solubility and complete ionization.

Be careful of significant figures.

Turn in the following on a clean, full sheet of paper (not torn out of a notebook):

Name

Student ID Number

The answers to the four questions asked. Show your work.