Practice Homework Assignment #4

Question 1

What are the origins of ACIDS?

Question 2

What are the origins of BASES?

Question 3

What are conjugate acids and bases?

Question 4

How do you define a strong acid and a weak acid?

Question 5

What is pH and pOH of a solution?

Question 6

If the pOH of a solution is 9, what is its pH?

Question 7

What is the pOH of a solution containing 0.75M H2SO4?

Question 8

What is the pH of a solution containing 0.5M BA(OH)2?

Question 9

What is a buffer? What is the buffer capacity?

Question 10

How to calculate pH of buffer?

Question 11

What are the basic principles of reactions with acids with metal/metal oxide/metal hydroxide?

Question 12

What are the applications of acids/bases in our health?

Question 13

Acetic acid has Ka 1.8 * 10^-5 phosphoric acid has Ka 7.5 * 10^-3, and Formic acid as Ka 1.8 * 10^-4. Arrange these weak acids in order of increasing acidity

Question 14

Calculate the pKA of these acids. What can you tell about the relationship between Ka/pKA and the strength of the acids?

Question 15

A solution contains 0.025M phosphoric acid and 0.5M potassium dehydrogenase phosphate. What is the pH of that solution?