a diprotic acid (H2A) has a pKa values of 4.48 and 8.96. which of the qualities is true when the pH is 4.48. which of the equalities is true when the pH is 8.96
Added by Ignacio G.
Step 1
A diprotic acid (H2A) can donate two protons (H+), and it has two dissociation constants (Ka1 and Ka2) corresponding to its two dissociation steps. The pKa values are the negative logarithms of these dissociation constants. Show more…
Show all steps
Your feedback will help us improve your experience
Adi S and 82 other Chemistry 101 educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
The diprotic acid H2A has pK1 = 4.63 and pK2 = 8.98. a) at what pH is [H2A] = [HA-]? b) at what pH is [HA-] = [A2-]? c) Which is the principal species at pH 2.00: d) Which is the principal species at pH 6.00: e) Which is the principal species at pH 10.00:
Adi S.
HA is an acid with a pKa of 4.5. Which of the following statements about an aqueous solution of HA is true? a. At pH = 7.5, the solution contains much more HA than A- b. At pH = 4.5, the solution contains more H-A than A- c. At pH = 4.5, the solution contains more A- than H-A d. At pH = 6.5, the solution contains much more HA than A- e. At pH = 3.5, the solution contains less A- than HA
HA is an acid with a pKa = 4.5. Which of the following statements about an aqueous solution of HA is true? Select one: a. At pH = 4.5, the solution contains more A- than H-A b. At pH = 6.5, the solution contains much more HA than A- c. At pH = 4.5, the solution contains more H-A than A- d. At pH = 3.5, the solution contains less A- than HA e. At pH = 7.5, the solution contains much more HA than A-
Raghvendra S.
Recommended Textbooks
Chemistry: Structure and Properties
Chemistry The Central Science
Chemistry
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD