CHM112 Home Page | Reference Materials | Homework Assignments | Lectures | Exams & Quizzes | Grades | Study Aids | URI Home Page |

Section 1

Homework Assignment #13

Practice (**not to be turned in**): Problems 15.39,
15.41,
15.44,
15.108,
15.109

1) A solution of perchloric acid is prepared that has a molar concentration equal to **the last four digits of your Student ID Number divided by 10 ^{7}**, rounded to two significant figures. What is the pH and pOH of that solution at 25

2) A solution of nitric acid is prepared that has a molar concentration equal to **the last four digits of your Student ID Number divided by 10 ^{5}**, rounded to two significant figures. What is the pH and pOH of that solution at 25

3) A solution of potassium hydroxide is prepared that has a molar concentration equal to **the last four digits of your ID Number divided by 10 ^{6}**, rounded to two significant figures. What is the pH and pOH of that solution at 25

4) A solution of barium hydroxide is prepared that has a molar concentration equal to **the last four digits of your ID Number divided by 10 ^{7}**, rounded to two significant figures. What is the pH and pOH of that solution at 25

**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 questions asked. Show your work.