Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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Question
Question 14. Practice exam. Will post the answer, just need help with the concept so please explain. Thank you!
Transcribed Image Text:17.
18.
16. Whi
b
a.
12.
13.
14.
11.
10.
15.
16.
17.
9.
8.
7.
ANS: C
ANS: C
Answer Section
MULTIPLE CHOI
I. ANS: E
2.
ANS: E
3.
ANS: B
4. ANS: A
5. ANS: D
6.
ANS: B
ANS: A
ANS: E
ANS: B
ANS: D
ANS: B
ANS: E
ANS: A
ANS: A
ANS: A
ANS: D
ANS: A
18. ANS: E
19. ANS: B
20. ANS: B
21. ANS: A
22. ANS: C
23. ANS: C
24.
25.
Transcribed Image Text:13.
a.
a.
b.
NHAI
A sample of 0.050 mol of NaOH is added to a solution containing 0.100 mol of acetic acid (K,= 1.8x10'). After
mixing, is the solution a buffer?
C.
a.
d.
e.
CaBr2
b.
Yes, because the solution contains a weak acid and its conjugate base.
Yes, because the solution contains acetate ions and hydroxide ions.
No, because the solution contains acetate ions and hydroxide ions.
No. because we don't know the volume.
No, because we have too much acid.
14.
A sample of 0.45 mol of the weak acid HCIO (pKa = 7.54) and 0.15 mol of NaClO are dissolved in enough water to
make 0.750 L of solution. What is the pH of the solution?
a.
7.06
b. 8.02
C.
3.88
d. 10.42
e. 0.398
15. When 15.0 mL of a 0.20 M HCl solution is mixed with 20.0 mL of 0.15 M NaOH solution, what is the pH of the
resulting solution?
7.00
b. 1.06
C.
12.93
d. 6.93
e. 7.25
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