Acids and Bases Exit Ticket

Last updated 10 months ago
14 questions

SECTION A

The following questions relate to these four solutions:
2

Which of these solution(s) are classified as monoprotic acid(s)?

2

Write a Ka expression for any one acid shown. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

2

Write a Kb expression for any one base shown above. To do this, click on "show your work" and either use a combination of the text box and pen tools OR write it on paper and use the insert function to insert a photo

2

Arrange solutions (A-D) from lowest to highest pH. Click and drag them into correct position.

  1. A
  2. D
  3. B
  4. C
1

Consider solution A:
What is the concentration of hydronium ions?

1

Consider solution A:
What is the concentration of hydroxide ions?

2

Consider solution A:
What is the pH?

SECTION B

Kw at 25 oC is 1 x 10-14
2

What does the size of the Kw value indicate about water's ability to ionise?

3

Describe what happens to the Kw of water when the following changes are made:

  • Kw decreases
  • Kw increases
  • Kw remains the same
  • Temperature is greater than 25 oC
  • Temperature is less than 25 oC
  • A small amount of acid is added

SECTION C

2

Order the following Ka values in order from strongest acid to weakest acid:

  1. 1 x 10-2
  2. 0,8
  3. 1 x 10-5
  4. 1 x 101
  5. 2 x 10-1
4
For the following reaction, which of the following is a conjugate acid-base pair?
HC2O4-(aq) + H2O(l) --------> H3O+(aq) + C2O42(aq)
The acid is _______________ and its conjugate base is _______________
The base is ___________ and its conjugate acid is _____________
Other Answer Choices:
H3O+(aq)
H2O(l)
HC2O4-(aq)
C2O42-(aq)
4
For the following reaction, which of the following is a conjugate acid-base pair?
H2PO4-(aq) + NH3 (aq) -------> HPO42- (aq) + NH4+(aq)
The acid is _______________ and its conjugate base is ___________
The base is ____________ and its conjugate acid is _____________
Other Answer Choices:
HPO42-
H2PO4-(aq)
NH4+(aq)
NH3(aq)
1

A Brønsted-Lowry base is defined as a substance that

2

Select the substance(s) which is/are ampholytes