According to your pKA1 and pKA2 values, at which pH ranges would maleic acid be usable as a buffer? Could maleic acid be...
According to your pKA1 and pKA2 values, at which pH ranges would maleic acid be usable as a buffer? Could maleic acid be used as a buffer at physiological pH? Explain.
Homework Answers
Add Answer to:
According to your pKA1 and pKA2 values, at which pH ranges would maleic acid be usable as a buffer? Could maleic acid be...
Maleic acid is a weak diprotic acid with : pKa1 = 1.87 pKa2 = 6.07 A...
Maleic acid is a weak diprotic acid with : pKa1 = 1.87 pKa2 = 6.07 A 10.00 mL solution of 0.1000 M maleic acid is titrated with 0.1000 M NaOH. Calculate the pH of the solution at the first equivalence point.
work check and help with the last question. pka2 is more accurate than pka1. 58 5....
work check and help with the last question. pka2 is more accurate
than pka1.
58 5. Calculation of molar mass: Use class-average NaOH molarity and your part B data. (Be sure this calculation is consistent with your choice reported in #1 and 2 above.) 6. Complete the following table, having consulted a table of diprotic acids; taking into account molar mass and pKa's, identify your unknown: I Molar mass pKa1 pKa2 From titration data Data from reference | 6-1 Unknown:...
For phosphoric acid, pKa1 = 2.16, pKa2 = 7.21, and pKa3 = 12.32; which of the...
For phosphoric acid, pKa1 = 2.16, pKa2 = 7.21, and pKa3 = 12.32; which of the following pairs of solutions could be used to produce a solution buffered at pH = 12.00? a) 1.00 M H3PO4 & 1.00 M HCl b) 1.00 M NaH2PO4 & 1.00 M Na2HPO4 c) 1.00 M Na3PO4 & 1.00 M HCl d) 1.00 M Na3PO4 & 1.00 M NaOH Please explain.
You are provided 0.800M KOH, 3.38 grams of oxalic acid. Oxalic acid pKa1 = 1.250, pKa2...
You are provided 0.800M KOH, 3.38 grams of oxalic acid. Oxalic acid pKa1 = 1.250, pKa2 = 4.266 How would you prepare a buffer with the following pH? i) pH 4.4 ii) pH 2.3
4. A diprotic acid has the following pK values: pKa1 = 5.50, pKa2 = 9.50 A....
4. A diprotic acid has the following pK values: pKa1 = 5.50, pKa2 = 9.50 A. At what pH does [H2A] = [HA- ]? B. At what pH doe [HA- ] = [A2- ]? C. Which is the principal species at pH = 3.50, H2A, HA- , or A2- ? Justify your answer using the Henderson-Hasselbach equation. D. Which is the principal species at pH = 7.5, H2A, HA- , or A2- ? Justify your answer (don’t use Henderson-Hasselbach equation,...
Phosphoric acid is a triprotic acid with the following pKa values: pKa1=2.148 pKa2=7.198 pKa3=12.375 You wish...
Phosphoric acid is a triprotic acid with the following pKa values: pKa1=2.148 pKa2=7.198 pKa3=12.375 You wish to prepare 1.000 L of a 0.0100 M phosphate buffer at pH 7.580. To do this, you choose to mix the two salt forms involved in the second ionization, NaH2PO4 and Na2HPO4, in a 1.000 L volumetric flask and add water to the mark. What mass of each salt will you add to the mixture? Mass NaH2PO4=? Mass Na2HPO4=?
The acid H2A has pKa1 = 4.0 and pKa2 = 8.0, which describe is true A)...
The acid H2A has pKa1 = 4.0 and pKa2 = 8.0, which describe is true A) at pH 6.0, [H2A] = [A^2-] B) at pH 6.0 [H2A] = [HA^-] C) at pH 6.0 [A^2-] = [HA^-] D) at pH 4.0 [A^2-] = [HA^-] Answer: A
. Tricarballylic acid, H3T, has pKa1 = 2.9, pKa2 = 4.4 and pKa3 = 6.0. At pH 2.0, the principal species in solution is a...
. Tricarballylic acid, H3T, has pKa1 = 2.9, pKa2 = 4.4 and pKa3 = 6.0. At pH 2.0, the principal species in solution is a. H3T b.H2T - c. HT2- d. T3 Please explain Thank you!!
A diprotic acid, H2A has acid dissociation values, with pKa1-1.85 and pKa2-7.17. What is the Kb1...
A diprotic acid, H2A has acid dissociation values, with pKa1-1.85 and pKa2-7.17. What is the Kb1 of its base form, A2? Note: -Report final answer only without subscript and unit. - Round your final answer to correct sig fig.
Citric acid is triprotic (H3Cit) with acidity constants (at 25 °C) of pKa1 = 3.13, pKa2...
Citric acid is triprotic (H3Cit) with acidity constants (at 25 °C) of pKa1 = 3.13, pKa2 = 4.76, and pKa3 = 6.40. a) Write out the expressions for α_0, α_1, α_2, and α_3 as a function of Ka values and {H+}. b) Identify the pH range in which each citrate species (H3Cit, H2Cit–, HCit2–, and Cit3–) predominates. c) A solution is prepared by dissolving 0.10 mol of Na2HCit in enough deionized water to give a total volume of 1.00 L....
work check and help with the last question. pka2 is more accurate
than pka1.
58 5. Calculation of molar mass: Use class-average NaOH molarity and your part B data. (Be sure this calculation is consistent with your choice reported in #1 and 2 above.) 6. Complete the following table, having consulted a table of diprotic acids; taking into account molar mass and pKa's, identify your unknown: I Molar mass pKa1 pKa2 From titration data Data from reference | 6-1 Unknown:...
A diprotic acid, H2A has acid dissociation values, with pKa1-1.85 and pKa2-7.17. What is the Kb1 of its base form, A2? Note: -Report final answer only without subscript and unit. - Round your final answer to correct sig fig.
Most questions answered within 3 hours.
-
Question1 ) The STL provides similiar classes called stack and
queue, both of which gave functions...
asked 36 minutes ago -
For Questions 1-4, assume you have 5 bits available:
1. For (positive) integers: What is the...
asked 37 minutes ago -
convert grams into vloume with the density of water being at
.997514 g/cm^3 at 23.1 Celsuis...
asked 2 hours ago -
Foreman company obtained a $20,000, 6% loan on May 1, 2018.
Principal and interest will be...
asked 2 hours ago -
5. Problem 11.05 (Discounted Payback)
eBook
Project L costs $60,000, its expected cash inflows are $14,000
per...
asked 3 hours ago -
1. Which of the following is true about politics and health
organizations?
A. Health organizations are...
asked 3 hours ago -
A space vehicle is coasting at a constant velocity of 18.1 m/s
in the +y direction...
asked 4 hours ago -
5) Use the following balanced equation to answer questions
(a)-(i).
3 Cu(s) + 8 HNO3(aq) →...
asked 4 hours ago -
A three-year maturity bond with a 12% annual coupon rate is
currently traded at par $1000...
asked 4 hours ago -
1.
What is the minimum volume to use in the Spec 20 cuvette in order
to...
asked 5 hours ago -
A builder wants to install wall-to-wall carpeting in a living
room of length 8.87 m and...
asked 4 hours ago -
Organizational change can produce anxiety in those affected by
the change. In what ways can change...
asked 5 hours ago