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Acids and Bases 1
By Sandra Kuhn
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Last updated about 1 year ago
10 questions
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2
2
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1
1
1
1
2
2
1
QUESTION 1
The following questions relate to these four solutions:
Question 1
1.
1.1 Which of these solution(s) are classified as monoprotic acid(s)?
A
B
C
D
none
Question 2
2.
1.2
Write
a Ka expression for any one acid shown above. (use a combination of the text box and pen tools)
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Question 3
3.
1.3
Write
a Kb expression for any one base shown above. (use a combination of the text box and pen tools)
visibility
View drawing
Question 4
4.
1.4 Arrange solutions (A-D) from
lowest
to
highest
pH. Click and drag them into correct position.
A
C
D
B
Question 5
5.
1.5 Consider solution A:
What is the concentration of hydronium ions?
1 x 10
-2
mol.dm
-3
0,02 mol.dm
-3
1 x 10
-12
mol.dm
-3
1 x 10
-14
mol.dm
-3
Question 6
6.
1.6 Consider solution A:
What is the concentration of hydroxide ions?
1 x 10
-2
mol.dm
-3
0,02 mol.dm
-3
1 x 10
-14
mol.dm
-3
1 x 10
-12
mol.dm
-3
Question 7
7.
1.7 Consider solution A:
What is the pH?
1
5
2
4
3
QUESTION 2
Kw at 25
o
C is 1 x 10
-14
Question 8
8.
2.1 What does the Kw value indicate about water's ability to ionise?
Question 9
9.
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
Question 10
10.
3.1 Order the following Ka values in order from
strongest
acid to
weakest
acid:
1 x 10
1
2 x 10
-1
0,8
1 x 10
-5
1 x 10
-2