the volu me relmadIIs CUnStunt. Istu. Use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution that is 0.25 M in formic acid (HCO,H) and 0.50 M in sodium formate (HCO,Na). 18.69 Use the Henderson-Hasselbalch equation to calculate the ratio of H,CO3 to HCO3 in blood having a pH of 7.40.

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...
icon
Related questions
Question

Can you please answer sub question A and B and show all of the steps to the solution please and thank you 

A the volume relmams
s CUIIstunt.
Use the Henderson-Hasselbalch equation to calculate the
pH of a buffer solution that is 0.25 M in formic acid
(HCO2H) and 0.50 M in sodium formate (HCO,Na).
15.69 Use the Henderson-Hasselbalch equation to calculate the
ratio of H2CO3 to HCO3 in blood having a pH of 7.40.
Transcribed Image Text:A the volume relmams s CUIIstunt. Use the Henderson-Hasselbalch equation to calculate the pH of a buffer solution that is 0.25 M in formic acid (HCO2H) and 0.50 M in sodium formate (HCO,Na). 15.69 Use the Henderson-Hasselbalch equation to calculate the ratio of H2CO3 to HCO3 in blood having a pH of 7.40.
Expert Solution
Step 1

Solution, which resist in pH change value upon addition of small amount of strong acid or base (less then 1%) is known as buffer solution

Acidic buffer  An acidic buffer solution consist with solution of weak acid and its salt.

Basic buffer - A basic buffer solution consist with solution of weak base and its salt. 

Step 2

Given information:

Concentration of formic acid HCO2H0.25 M

Concentration of sodium formate HCO2Na0.50 M

pKa of formic acid = 3.75

Solution consist with weak acid HCO2H formic acid and its salt HCO2Na sodium formate. Therefore, the mixture is an acidic buffer solution.

From Henderson- Hasselbalch equation for acidic buffer solution:

pH =pKa + log  concentration of saltconcentration of acid

Substitute, 3.75 pKa, 0.50 M concentration of salt and 0.25 M concentration of formic acid in the expression:

pH =3.75 + log 0.50 M0.25MpH = 3.75 + log 2       4.05

Therefore, the pH of the solution mixture of formic acid and sodium formate is 4.05.

 

steps

Step by step

Solved in 3 steps

Blurred answer
Knowledge Booster
Activities
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.
Similar questions
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