Homework Help is Here – Start Your Trial Now!
Science
Chemistry
The problem: you have 250 mL of 0.2 M potassium phosphate buffer, pH 6.60. What is the pH after adding 7 mL of 3 M KOH? 1) The relevant pKa of the acid in this problem is: a) 6.86 b) 2.14 c) 3.75 d) 4.76 e) 12.4 5) The initial concentration of conjugate base is: a) 0 M b) 0.20 M c) 0.100 M d) 0.129 M e) 0.071 M 6) The initial number of moles of conjugate base is:

The problem: you have 250 mL of 0.2 M potassium phosphate buffer, pH 6.60. What is the pH after adding 7 mL of 3 M KOH? 1) The relevant pKa of the acid in this problem is: a) 6.86 b) 2.14 c) 3.75 d) 4.76 e) 12.4 5) The initial concentration of conjugate base is: a) 0 M b) 0.20 M c) 0.100 M d) 0.129 M e) 0.071 M 6) The initial number of moles of conjugate base is:

Chemistry
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...
See similar textbooks
icon
Related questions
Question
Please provide answer of 1,5,6,7,8,9
The problem: you have 250 mL of 0.2 M potassium phosphate buffer, pH 6.60. What is the pH after adding 7 mL of 3М КОН? 1) The relevant pKa of the acid in this problem is: a) 6.86 b) 2.14 c) 3.75 d) 4.76 e) 12.4 5) The initial concentration of conjugate base is: a) 0 M b) 0.20 M c) 0.100 M d) 0.129 M e) 0.071 M 6) The initial number of moles of conjugate base is: A) 0.0323 moles B) 0.200 moles C) 0.323 moles D) 0.0178 mole E) 0.100 moles F) 0.077 moles 7) The number of moles of KOH added is: a) 0.042 M b) 0.005 moles c) 0.210 moles d) 0.05 moles e) 0.021 moles 8) The final number of moles of acid (HA) is: A) 0.073 M B) 0.0113 moles C) 0.2 moles D) 0.039 moles E) 0.127 moles 9) The final pH = A) pKa + 0.54 B) pKa + 0.28 C) pKa + 0.68 D) 7.0 E) pKa - 0.33
Transcribed Image Text:The problem: you have 250 mL of 0.2 M potassium phosphate buffer, pH 6.60. What is the pH after adding 7 mL of 3М КОН? 1) The relevant pKa of the acid in this problem is: a) 6.86 b) 2.14 c) 3.75 d) 4.76 e) 12.4 5) The initial concentration of conjugate base is: a) 0 M b) 0.20 M c) 0.100 M d) 0.129 M e) 0.071 M 6) The initial number of moles of conjugate base is: A) 0.0323 moles B) 0.200 moles C) 0.323 moles D) 0.0178 mole E) 0.100 moles F) 0.077 moles 7) The number of moles of KOH added is: a) 0.042 M b) 0.005 moles c) 0.210 moles d) 0.05 moles e) 0.021 moles 8) The final number of moles of acid (HA) is: A) 0.073 M B) 0.0113 moles C) 0.2 moles D) 0.039 moles E) 0.127 moles 9) The final pH = A) pKa + 0.54 B) pKa + 0.28 C) pKa + 0.68 D) 7.0 E) pKa - 0.33
Expert Solution
steps

Step by step

Solved in 4 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Acid-Base Titrations
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
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
SEE MORE TEXTBOOKS