Acids and Bases 1

Last updated 10 months ago
10 questions

QUESTION 1

The following questions relate to these four solutions:

2

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

2

1.2 Write a Ka expression for any one acid shown above. (use a combination of the text box and pen tools)

2

1.3 Write a Kb expression for any one base shown above. (use a combination of the text box and pen tools)

1

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

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

1.5 Consider solution A:

What is the concentration of hydronium ions?

1

1.6 Consider solution A:

What is the concentration of hydroxide ions?

1

1.7 Consider solution A:

What is the pH?

QUESTION 2

Kw at 25 oC is 1 x 10-14
2

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

2

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

  • Temperature decreases
  • A bit of strong acid is added
  • Kw increases if:
  • Kw decreases if:
  • Kw stays the same if:

QUESTION 3

1

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

  1. 1 x 10-5
  2. 1 x 101
  3. 2 x 10-1
  4. 1 x 10-2
  5. 0,8