View Attempt 1 of 1
Title:
Exam 3
Started:
April 28, 2009 8:46 AM
Submitted:
April 28, 2009 9:52 AM
Time spent:
01:05:53
Total score:
18/20 = 90%
Total score adjusted by 0.0
Maximum possible score: 20
1.
Chapter 11 Ksp S 2
What is the solubility in moles/liter for barium sulfate at 25
o
C given a K
sp
value of 1.1
x 10
10
. Write using scientific notation and use 1 or 2 decimal places (even though this
is strictly incorrect!)
Student Response
Value
Correct Answer
1. 1.0E5
100%
Equals
1.05e5
(100%)
Equals
1.1e5
(100%)
Equals
1.0e5
(100%)
General
Feedback:
K
sp
= S
2
Score:
1/1
2.
CIE 2
What is the solubility of silver iodide (K
sp
= 8.3 x 10
17
) in a solution of 0.15 M
magnesium iodide?
Student
Response
Value
Correct
Answer
Feedback
a. 2.8 x 10

16
100%
b. 2.7 x 10
6
0%
c. 5.5 x 10

16
0%
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