CHEM 1101
Homework Assignment #10
Chapter 10.1-10.5 Due: Monday, November 16 by 11:59 pm
1.) Which one of the following is a property of an acid?
- turns red litmus paper blue
- has a bitter taste
- reacts with metals to produce H2 gas (d.) all of the above.
2.) Which one of the following is the conjugate acid of HPO42-?
(a.) PO43- (b.) H2PO4–
- H3PO4
- HPO42-
3.) Which one of the following household substances is not an acid?
- lemon juice
- vinegar
- glass cleaner (ammonia solution)
- orange juice
4.) Which one of the following is true for an acidic solution?
- [H3O+] = [OH–]
- [H3O+] > [OH–]
- [H3O+] < [OH–] (d.) none of the above.
- What is the [H3O+] of a solution if its [OH–] = 6.5 x 10-8 M? Kw = 1.0 x 10-14
- Calculate the pH of a solution if its [H3O+] = 2.0 x 10-5.
- What is expected to happen if a small amount of a base is added to a buffer solution?
- the pH of the solution will increase greatly.
- the pH of the solution will decrease greatly.
- the pH of the solution will increase by a small amount.
- the pH of the solution will decrease by a small amount.