a. 1.0X10 1.01 12. Which of the following substances a. CaBr2 b. NHI produces a basic solution C. LICI when dissolved d. Co(NO3)2 ion containing 0.100 mol of acetic acid (Ka in water? e. NaCN
a. 1.0X10 1.01 12. Which of the following substances a. CaBr2 b. NHI produces a basic solution C. LICI when dissolved d. Co(NO3)2 ion containing 0.100 mol of acetic acid (Ka in water? e. NaCN
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 12. Practice exam. Will post the answer, just need help with the concept so please explain. Thank you!
Transcribed Image Text:16.
MULTIPLE CHOICE
10.
11.
8.
9.
7.
ANS: E
ANS: E
ANS: B
ANS: A
ANS: D
ANS: B
ANS: A
ANS: E
ANS: B
ANS: D
ANS: B
6.
5.
1.
2.
3.
4.
12. ANS: E
13. ANS: A
14. ANS: A
15. ANS: A
16. ANS: D
17. ANS: A
18. ANS: E
19. ANS: B
20. ANS: B
21. ANS: A
22. ANS: C
23. ANS: C
24.
ANS: C
25.
ANS: C
![9.
10.
What is the pH of a solution with [OH] = 1.8x10-57
a.
4.75
b.
9.25
c. 7.00
a.
d. 4.76
e. 8.25
What is the pH of a solution that is 0.40 M in HCN? The Ka for HCN is 4.0x10-10
d. 4.90
a. 0.40
b.
9.40
C.
9.80
e. 9.10
11.
A 0.64 M solution of the weak base hydrazine (N₂H4) is found to be 0.16% ionized at equilibrium. What is t
value of K, for hydrazine?
a.
1.0x10-3
b. 1.6x10-6
d. 6.7x104
e. 1.0x10¹
12. Which of the following substances produces a basic solution when dissolved in water?
CaBr2
b. NH4I
c. LICI
d. Co(NO3)2
e. NaCN
c. 5.77
13. A sample of 0.050 mol of NaOH is added to a solution containing 0.100 mol of acetic acid (K₁ = 1.8x10-5
mixing, is the solution a buffer?
a. Yes, because the solution contains a weak acid and its conjugate base.
b. Yes, because the solution contains acetate ions and hydroxide ions.
c. No, because the solution contains acetate ions and hydroxide ions.
d. No. because we don't know the volume.
e. No, because we have too much acid.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F43965b80-42e8-41df-9b51-2c2200725cfe%2Ff6e7c197-9dd5-456d-a397-a6717335344e%2Ft5twys_processed.jpeg&w=3840&q=75)
Transcribed Image Text:9.
10.
What is the pH of a solution with [OH] = 1.8x10-57
a.
4.75
b.
9.25
c. 7.00
a.
d. 4.76
e. 8.25
What is the pH of a solution that is 0.40 M in HCN? The Ka for HCN is 4.0x10-10
d. 4.90
a. 0.40
b.
9.40
C.
9.80
e. 9.10
11.
A 0.64 M solution of the weak base hydrazine (N₂H4) is found to be 0.16% ionized at equilibrium. What is t
value of K, for hydrazine?
a.
1.0x10-3
b. 1.6x10-6
d. 6.7x104
e. 1.0x10¹
12. Which of the following substances produces a basic solution when dissolved in water?
CaBr2
b. NH4I
c. LICI
d. Co(NO3)2
e. NaCN
c. 5.77
13. A sample of 0.050 mol of NaOH is added to a solution containing 0.100 mol of acetic acid (K₁ = 1.8x10-5
mixing, is the solution a buffer?
a. Yes, because the solution contains a weak acid and its conjugate base.
b. Yes, because the solution contains acetate ions and hydroxide ions.
c. No, because the solution contains acetate ions and hydroxide ions.
d. No. because we don't know the volume.
e. No, because we have too much acid.
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