7. Using the values of Ka given below Acid Acetic Benzoic Carbonic H₂CO3 Chlorous Cyanic Formic Formula CH COOH C.HSCOOH Mix#1 Hydrocyanic HCN Hydrofluoric HF Mix #2 HCIO₂ Mix#1 HOCN b) pH = 1.20 Mix #2 HCOOH K₁ 1.8 x 10-5 6.5 × 10-5 Acid Kal = 4.3 x 10-7 1.1 x 10-2 Acid 2.0 × 10 1.8 x 104 4.9 × 10-10 3.5 x 104 pKa Acid Hypobromous HOBr Hypochlorous HOCI Hypoiodous HOI Oxalic Sulfurous Formula Base Base H₂C₂O4 6 HC₂04 H₂SO3 For each pH: - Pick the best two pairs of compounds that could be mixed to create a buffer of the desired pH HSO3 (Each mix must contain two complete neutral compounds, NOT JUST IONS!) State the base/acid ratio that would be needed. - For each pH, note the pair that would create the best buffer. a) pH = 3.50 K₁ 2.8 × 10⁹ 2.9 × 10-8 2.3 × 10-11 Kal = 5.9 × 10- 2 K₁2=6.4 x 10- 5 Kal = 1.7 x 10- 2 K₁2=6.4 x 10- 8 B/A Ratio B/A Ratio pKa Best? Best?
7. Using the values of Ka given below Acid Acetic Benzoic Carbonic H₂CO3 Chlorous Cyanic Formic Formula CH COOH C.HSCOOH Mix#1 Hydrocyanic HCN Hydrofluoric HF Mix #2 HCIO₂ Mix#1 HOCN b) pH = 1.20 Mix #2 HCOOH K₁ 1.8 x 10-5 6.5 × 10-5 Acid Kal = 4.3 x 10-7 1.1 x 10-2 Acid 2.0 × 10 1.8 x 104 4.9 × 10-10 3.5 x 104 pKa Acid Hypobromous HOBr Hypochlorous HOCI Hypoiodous HOI Oxalic Sulfurous Formula Base Base H₂C₂O4 6 HC₂04 H₂SO3 For each pH: - Pick the best two pairs of compounds that could be mixed to create a buffer of the desired pH HSO3 (Each mix must contain two complete neutral compounds, NOT JUST IONS!) State the base/acid ratio that would be needed. - For each pH, note the pair that would create the best buffer. a) pH = 3.50 K₁ 2.8 × 10⁹ 2.9 × 10-8 2.3 × 10-11 Kal = 5.9 × 10- 2 K₁2=6.4 x 10- 5 Kal = 1.7 x 10- 2 K₁2=6.4 x 10- 8 B/A Ratio B/A Ratio pKa Best? Best?
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
Concept explainers
Ionic Equilibrium
Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.
Arrhenius Acid
Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.
Bronsted Lowry Base In Inorganic Chemistry
Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.
Question
100%
7 plz thanks
Transcribed Image Text:c) pH = 9.00
Mix#1
Mix #2
Acid
Base
B/A
Ratio
Best?
8. What mass of sodium benzoate should you add to 150.0mL of a 0.15M benzoic
acid solution to obtain a buffer with a pH of 4.25?
Transcribed Image Text:7. Using the values of Ka given below
Acid
K₁
Acetic
1.8 x 10-5
Benzoic
Carbonic
Chlorous
Cyanic
Formic
Hydrocyanic HCN
Hydrofluoric HF
Mix#1
Formula
CH₂COOH
C6H5COOH
H₂CO3
HCIO₂
Mix #2
HOCN
Mix#1
HCOOH
b) pH = 1.20
Mix #2
6.5 × 10-5
Kal = 4.3 x
10-7
1.1 x 10-2
Acid
2.0 × 10-4
Acid
1.8 x 104
4.9 × 10-10
3.5 x 104
pKa
Acid
Hypobromous HOBr
Hypochlorous HOCI
Hypoiodous
HOI
Oxalic
Sulfurous
Formula
Base
H₂C₂O4
Base
HC₂04
H₂SO3
HSO3
For each pH:
- Pick the best two pairs of compounds that could be mixed to create a buffer of the
desired pH
K₂
2.8 × 10⁹
(Each mix must contain two complete neutral compounds, NOT JUST IONS!)
State the base/acid ratio that would be needed.
- For each pH, note the pair that would create the best buffer.
a) pH = 3.50
2.9 × 10-8
2.3 × 10-11
Kal = 5.9 × 10-
2
K₁2= 6.4 x 10-
5
Kal = 1.7 x 10
2
K2=6.4 x 10-
8
B/A
Ratio
B/A
Ratio
pKa
Best?
Best?
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution!
Trending now
This is a popular solution!
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