8-The following titration curve is the kind of curve expected for the titration of a base (a) strong, strong (b) weak, strong (c) strong, weak (d) weak, weak (e) none of these pH 71 acid with a mL added
8-The following titration curve is the kind of curve expected for the titration of a base (a) strong, strong (b) weak, strong (c) strong, weak (d) weak, weak (e) none of these pH 71 acid with a mL added
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...
Related questions
Question
Q 8 please
![Q1:Chose the correct answer from the following
1-The [HO] in a 0.050 M solution of Ba(OH), is:
(a) 1.0 x 10' M (b) 5.0 x 10 M (c) 10 x 10 M (d) 5.0 x 10" M
2-The pH of a 0.02 M solution of an unknown weak acid is 3.7. what is the pK, of this acid?
(a) 5.7 (b) 4.9
(d) 28
(c) 3.7
3-Which of the following solutions has the lowest pH at 25°C? (No calculations required.)
(a) 0.2 M sodium hydroxide (b) 0.2 M hypochlorous acid (c) 02 M ammonia (d) 0.2 M benzoic
acid (e) pure water
4-The pH of 0.15 M trimethylammonium chloride, (CH)NHCI, a salt, is 5.34. What is the percent
hydrolysis?
(a) 0,003% (b) 0.0068%
(c) 0.0094 %
(c) 0.022%
(d) 0.011 %
5-How many grams of NaF would have to be added to 2.00 L of 0.100 M HF to yield a solution with a pH
is 4.00% mw for NaF is 41.98 g/mol) Ka for HF 1.4 10
(a) 300 g
(b) 36 g
(c) 0.84 g
(d) 6.9 g
(c) 60. g
6-Calculate the pH of the solution resulting from the addition of 20.0 mL of 0.100 M NaOH to 30.0 ml. of
0.100 M HNO,
(a) 1.35
(b) 1.70
(c) 1.95
(d) 2.52
(c) 2.80
7-Consider the titrations of the pairs of aqueous acids and bases listed on the left. For which pair is the pH
at the equivalence point stated incorrectly?
Acid-Base Pair
tai
balls
(b) HNO-Ca(OH)
(e) 2.0 x 10¹ M
(HCIO, -NaOH
id) HCO NaOH
KHOA
pH at Equivalence Point
less than 7
(a) strong, strong
(b) weak, strong
(c) strong, weak
(d) weak, weak
(e) none of these
less than 7
8-The following titration curve is the kind of curve expected for the titration of a
base
pH 71
acid with a
mL added
9- A buffer system is set up with 3[HA] =[A]. If pK a -5.5, what is the pH of the buffer?
c. 5.3
a. 5.2
b. 3.5
d. 6.0
e. 7.5
10-If 25.00 ml of 0.1M NaOH solution is needed to reach the end point of 10 ml HNO₂. Then the concentration of
HNO, in ppm is: [M.wt. of HNO,-63 g/mol]
a. 9.45-10 ppm
b. 14.70×10 ppm
c. 7.30-10¹ ppm
d. 1.5750×10 ppm](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F46ef3182-b77b-4d5e-aa39-bd37ce4fcd02%2F44ecc6b7-d881-42a2-92f2-b2c80b6cc4e8%2F6j7gy1h_processed.jpeg&w=3840&q=75)
Transcribed Image Text:Q1:Chose the correct answer from the following
1-The [HO] in a 0.050 M solution of Ba(OH), is:
(a) 1.0 x 10' M (b) 5.0 x 10 M (c) 10 x 10 M (d) 5.0 x 10" M
2-The pH of a 0.02 M solution of an unknown weak acid is 3.7. what is the pK, of this acid?
(a) 5.7 (b) 4.9
(d) 28
(c) 3.7
3-Which of the following solutions has the lowest pH at 25°C? (No calculations required.)
(a) 0.2 M sodium hydroxide (b) 0.2 M hypochlorous acid (c) 02 M ammonia (d) 0.2 M benzoic
acid (e) pure water
4-The pH of 0.15 M trimethylammonium chloride, (CH)NHCI, a salt, is 5.34. What is the percent
hydrolysis?
(a) 0,003% (b) 0.0068%
(c) 0.0094 %
(c) 0.022%
(d) 0.011 %
5-How many grams of NaF would have to be added to 2.00 L of 0.100 M HF to yield a solution with a pH
is 4.00% mw for NaF is 41.98 g/mol) Ka for HF 1.4 10
(a) 300 g
(b) 36 g
(c) 0.84 g
(d) 6.9 g
(c) 60. g
6-Calculate the pH of the solution resulting from the addition of 20.0 mL of 0.100 M NaOH to 30.0 ml. of
0.100 M HNO,
(a) 1.35
(b) 1.70
(c) 1.95
(d) 2.52
(c) 2.80
7-Consider the titrations of the pairs of aqueous acids and bases listed on the left. For which pair is the pH
at the equivalence point stated incorrectly?
Acid-Base Pair
tai
balls
(b) HNO-Ca(OH)
(e) 2.0 x 10¹ M
(HCIO, -NaOH
id) HCO NaOH
KHOA
pH at Equivalence Point
less than 7
(a) strong, strong
(b) weak, strong
(c) strong, weak
(d) weak, weak
(e) none of these
less than 7
8-The following titration curve is the kind of curve expected for the titration of a
base
pH 71
acid with a
mL added
9- A buffer system is set up with 3[HA] =[A]. If pK a -5.5, what is the pH of the buffer?
c. 5.3
a. 5.2
b. 3.5
d. 6.0
e. 7.5
10-If 25.00 ml of 0.1M NaOH solution is needed to reach the end point of 10 ml HNO₂. Then the concentration of
HNO, in ppm is: [M.wt. of HNO,-63 g/mol]
a. 9.45-10 ppm
b. 14.70×10 ppm
c. 7.30-10¹ ppm
d. 1.5750×10 ppm
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.Recommended textbooks for you
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY