Learning Materials
Features
Discover
Chapter 10: QEE (page 230)
(c) Calculate the percentage in the major form at each pH.
When the pH is raised to 11, the dihydroxy benzene takes on two forms: one deprotonated and one protonated.
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
We will abbreviate malonic acid, , as . Find the pH and concentrations of , and in
(a) ;
(b) ;
(c) .
The diprotic acid has and .
(a) At what pH is = ?
(b) At what pH is = ?
(c) Which is the principal species at pH 2.00: or ?
(d) Which is the principal species at pH 6.00?
(e) Which is the principal species at pH 10.00?
Find theand the concentrations of and role="math" localid="1654855262945" in each solution:
(c)
(a) Which two of the following compounds would you mix to make a buffer of 7.45: (FM 98.00), (FM 119.98), (FM 141.96), and (FM 163.94)?
(b) If you wanted to prepare of buffer with a total phosphate concentration of , how many grams of each of the two selected compounds would you mix together?
(c) If you did what you calculated in part (b), you would not get a pH of exactly 7.45. Explain how you would really prepare this buffer in the lab.
Phosphate atis one of the main buffers in blood plasma, whose pH is 7.45. Would phosphate be as useful if the plasma pH were 8.5?
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Exams 
GCSE 
IGCSE 
AS 
A Level 
International A Level 
University Admissions Tests 
Flashcards 
Vaia AI 
Notes 
Study Plans 
Study Sets 
Find a job 
Find a degree 
Student Deals 
Magazine 
Mobile App