10. Consider a buffer prepared from the weak acid HF and its conjugate base F (shown below). What happens to the concentration of HF when a small amount of base is added to the buffer? HF(aq) + H,O(1) F(aq) + HO*(aq) A) [HF] increases initially, then decreases gradually as the components mix. B) [HF] increases C) [HF] stays the same D) [HF] decreases
10. Consider a buffer prepared from the weak acid HF and its conjugate base F (shown below). What happens to the concentration of HF when a small amount of base is added to the buffer? HF(aq) + H,O(1) F(aq) + HO*(aq) A) [HF] increases initially, then decreases gradually as the components mix. B) [HF] increases C) [HF] stays the same D) [HF] decreases
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
#10
![6. 2.5g of KCl is dissolved in water. In this mixture, water is referred to as the
A) hydrogen bond donor
B) solvent
C) solute
D) solution
7. Caitlin and Brandon are both hyperventilating. Caitlin breathes into a paper bag, while Brandon
does not. Which statement below
A) Brandon's blood is likely to be more acidic and have lower CO2 levels compared to Caitlin.
B) Caitlin's blood is likely to be more acidic and have higher CO2 levels compared to Brandon.
C) Brandon's blood is likely to be more acidic and have higher CO2 levels compared to Caitlin.
D) Caitlin's blood is likely to be more acidic and have lower CO2 levels compared to Brandon.
s most accurate?
8. What is the molarity of an H2SO4 solution if 12.5 mL of 0.28 M NaOH are needed to neutralize
25.0 mL of the sample?
A) 1.1 M
B) 0.56 M
C) 0.07 M
D) 0.14 M
9. An unknown amount of water is added to 75 mL of a 3.5 M aqueous glucose solution. What can be
said about the concentration of the resulting solution?
A)
The concentration of the resultant glucose solution will be greater than 3.5 M.
B) It is impossible to say anything about the concentration of the resultant glucose solution
because the amount of added water has not been provided.
C) The concentration of the resultant glucose solution will be less than 3.5 M.
D) The concentration of the resultant glucose solution will remain the same because the amount
of glucose has not changed.
10. Consider a buffer prepared from the weak acid HF and its conjugate base F (shown below). What
happens to the concentration of HF when a small amount of base is added to the buffer?
HF(aq) + H,O(1) F(aq) + HO*(aq)
A) [HF] increases initially, then decreases gradually as the components mix.
B) [HF] increases
C) [HF] stays the same
D) [HF] decreases
11. A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92%
(w/v) NaCl in water. How many grams of NaCl are contained in 575 mL of this solution?
A) 1.6 g NaCl
B) 53 g NaCl
C) 0.016 g NaCl
D) 529 g NaCl
E) 5.3 g NaCl
12. What is the molarity of a solution made by dissolving 3.09 moles of NaCl in 1.50 L of solution?
A) 0.673 M NaCl
B) 4.64 M NaCI
C) 4.85 M NaCl
D) 2.06 M NaCl
10H (8
VERSION 1](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fb6391df9-34cc-4005-aa8c-83a49a713e89%2F90026e2e-8c66-44bc-8230-20ea5f17d74b%2Fg4qzj7sq_processed.jpeg&w=3840&q=75)
Transcribed Image Text:6. 2.5g of KCl is dissolved in water. In this mixture, water is referred to as the
A) hydrogen bond donor
B) solvent
C) solute
D) solution
7. Caitlin and Brandon are both hyperventilating. Caitlin breathes into a paper bag, while Brandon
does not. Which statement below
A) Brandon's blood is likely to be more acidic and have lower CO2 levels compared to Caitlin.
B) Caitlin's blood is likely to be more acidic and have higher CO2 levels compared to Brandon.
C) Brandon's blood is likely to be more acidic and have higher CO2 levels compared to Caitlin.
D) Caitlin's blood is likely to be more acidic and have lower CO2 levels compared to Brandon.
s most accurate?
8. What is the molarity of an H2SO4 solution if 12.5 mL of 0.28 M NaOH are needed to neutralize
25.0 mL of the sample?
A) 1.1 M
B) 0.56 M
C) 0.07 M
D) 0.14 M
9. An unknown amount of water is added to 75 mL of a 3.5 M aqueous glucose solution. What can be
said about the concentration of the resulting solution?
A)
The concentration of the resultant glucose solution will be greater than 3.5 M.
B) It is impossible to say anything about the concentration of the resultant glucose solution
because the amount of added water has not been provided.
C) The concentration of the resultant glucose solution will be less than 3.5 M.
D) The concentration of the resultant glucose solution will remain the same because the amount
of glucose has not changed.
10. Consider a buffer prepared from the weak acid HF and its conjugate base F (shown below). What
happens to the concentration of HF when a small amount of base is added to the buffer?
HF(aq) + H,O(1) F(aq) + HO*(aq)
A) [HF] increases initially, then decreases gradually as the components mix.
B) [HF] increases
C) [HF] stays the same
D) [HF] decreases
11. A saline solution used in intravenous drips for patients who cannot take oral fluids contains 0.92%
(w/v) NaCl in water. How many grams of NaCl are contained in 575 mL of this solution?
A) 1.6 g NaCl
B) 53 g NaCl
C) 0.016 g NaCl
D) 529 g NaCl
E) 5.3 g NaCl
12. What is the molarity of a solution made by dissolving 3.09 moles of NaCl in 1.50 L of solution?
A) 0.673 M NaCl
B) 4.64 M NaCI
C) 4.85 M NaCl
D) 2.06 M NaCl
10H (8
VERSION 1
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