Homework Help is Here – Start Your Trial Now!
Science
Chemistry
1. What mass, in g, of LICN (mM = 32.959 g/mol) needs to be added to 278.9 ml of 0.0415 M HCN to achieve a solution with a pH of 9.84. Note: the pk, of HCN is 9.31, you may assume the 5% approximation holds, and you may assume that the addition of the solid does not change the volume. INSTRUCTIONS: Input your answer to 3 significant digits in scienfitic notation (example: 1.23E-4) and DO NOT include the units. Subrmil Answer Tries 0/99

1. What mass, in g, of LICN (mM = 32.959 g/mol) needs to be added to 278.9 ml of 0.0415 M HCN to achieve a solution with a pH of 9.84. Note: the pk, of HCN is 9.31, you may assume the 5% approximation holds, and you may assume that the addition of the solid does not change the volume. INSTRUCTIONS: Input your answer to 3 significant digits in scienfitic notation (example: 1.23E-4) and DO NOT include the units. Subrmil Answer Tries 0/99

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
icon
Concept explainers
Question
only 1 fast in one hour
1. What mass, in g, of LICN (mM = 32.959 g/mol) needs to be added to 278.9 mL of 0.0415 M HCN to achieve a solution with a pH of 9.84. Note: the pkg of HCN is 9.31, you may assume the 5% approximation holds, and you may assume that the addition of the solid does not change the volume. INSTRUCTIONS: Input your answer to 3 significant digits in scienfitic notation (example: 1.23E-4) and DO NOT include the units. Subrnit Answer Tries 0/99 2. What volume, in ml of 0.161 M HCO2H needs to be added to 621.2 mL of 0.0660 M NaHCO2 to achieve a solution with a pH of 4.55. Note: the pkg of HCO2H is 3.75, you may assume the 5% approximation holds, and you may assume that the volumes are additive. INSTRUCTIONS: Input your answer to 4 significant digits in standard notation (example: 1.234) and DO NOT include the units. mL Submit Answar Tries 0/99 3. What is the pH of a buffer solution prepared by adding 454 mL of 0.051 M KOH to 147 mL of 0.789 M HF? Note: the pkg of HF is 3.20, you may assume the 5% approximation holds, and you may assume that the volumes are additive. INSTRUCTIONS: Input your answer to 2 decimal places in standard notation (example: 1.23) and DO NOT include the units. pH = Submit Answer Tries 0/99 4. What volume, in mL of 0.423 M HCI needs to be added to 455.8 mL of 0.810 M NaHCO2 to achieve a solution with a pH of 3.15. Note: the pKh of NaHCO, is 10.25, you may assume the 5% approximation holds, and you may assume that the volumes are additive. INSTRUCTIONS: Input your answer to 4 significant digits in standard notation (example: 1.234) and DO NOT include the units. mL
Transcribed Image Text:1. What mass, in g, of LICN (mM = 32.959 g/mol) needs to be added to 278.9 mL of 0.0415 M HCN to achieve a solution with a pH of 9.84. Note: the pkg of HCN is 9.31, you may assume the 5% approximation holds, and you may assume that the addition of the solid does not change the volume. INSTRUCTIONS: Input your answer to 3 significant digits in scienfitic notation (example: 1.23E-4) and DO NOT include the units. Subrnit Answer Tries 0/99 2. What volume, in ml of 0.161 M HCO2H needs to be added to 621.2 mL of 0.0660 M NaHCO2 to achieve a solution with a pH of 4.55. Note: the pkg of HCO2H is 3.75, you may assume the 5% approximation holds, and you may assume that the volumes are additive. INSTRUCTIONS: Input your answer to 4 significant digits in standard notation (example: 1.234) and DO NOT include the units. mL Submit Answar Tries 0/99 3. What is the pH of a buffer solution prepared by adding 454 mL of 0.051 M KOH to 147 mL of 0.789 M HF? Note: the pkg of HF is 3.20, you may assume the 5% approximation holds, and you may assume that the volumes are additive. INSTRUCTIONS: Input your answer to 2 decimal places in standard notation (example: 1.23) and DO NOT include the units. pH = Submit Answer Tries 0/99 4. What volume, in mL of 0.423 M HCI needs to be added to 455.8 mL of 0.810 M NaHCO2 to achieve a solution with a pH of 3.15. Note: the pKh of NaHCO, is 10.25, you may assume the 5% approximation holds, and you may assume that the volumes are additive. INSTRUCTIONS: Input your answer to 4 significant digits in standard notation (example: 1.234) and DO NOT include the units. mL
Expert Solution
steps

Step by step

Solved in 3 steps with 1 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Ionic Equilibrium
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