Refer to the acid-base titration curve shown below. What is the pka of the acid present at the half- equivalence point? 13 11 7 3 10 20 30 40 Volume of Titrant Added, mL Select one: а. 5.0 b. 9.0 с. 3.1 d. 12.7 е. 4.5 на

Refer to the acid-base titration curve shown below. What is the pka of the acid present at the half- equivalence point? 13 11 7 3 10 20 30 40 Volume of Titrant Added, mL Select one: а. 5.0 b. 9.0 с. 3.1 d. 12.7 е. 4.5 на

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter15: Additional Aqueous Equilibria

Section: Chapter Questions

Problem 43QRT

See similar textbooks

Related questions

Q: When a monosaccharide is oxidized by an oxidizing agent such as Benedict's reagent, a sugar acid is…

Q: NazCr207 H2SO4, H20 A C6H120 5mem 1H NMR ring H* 4.2 ppm, s, 1H ELOH 3.4 ppm, d, 2H 1.9 ppm, m, 1H…

A: Na2CrO7, H2SO4 and H2O oxidizes primary alcohol to carboxylic acid. Carboxylic acid in the presence…

Q: Chemistry My question: Suggest any ways you can think of to improve any parts of empirical…

A: The empirical formula of Zinc iodide is ZnI2.

Q: Calculate the percentage of MnO2 in a mineral specimen if the I2 liberated by a 0.1267-g sample in…

A: Given data :

Q: A 1.50 L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate the pH of the solution after…

A: When NaOH , which is a strong base is added to buffer solution , it will react with acidic part of…

Q: Give the IUPAC name for the following aromatic amide: NH, CI O 1-chlorobenzanamide…

Q: 2.1. Find the enthalpy change for the reaction Cs2(1) + 3 02(g) → CO2(g) + 2 SO2(g) When: C(s) +…

A: Find the enthalpy change for the given reaction ?

Q: Balanced Equation: Osidized: Reduced: 6) H;O: + 10 →r + 0: (acidic solution) Balanced Equation:…

A: Balanced under acidic solution-

Q: 1. Show the electron configuration of the following elements below and underline the electrons that…

Q: Calculate the average value of r in a hydrogen 1s orbital from the equation P(r)= 4π r2R(r2)dr

A: We have to calculate the average value of r in 1s orbital.

Q: A radioactive particle that consists of two protons and two neutrons alpha particle beta particle…

Q: Consider the voltaic cell H+(aq, ?? M)|H2(g, 1 atm)||Cu(s)|Cu2+(aq. 0.1 M). The measured Ecell for…

A: Given that, the voltaic cell H+(aq, ?? M)|H2(g, 1 atm)||Cu(s)|Cu2+(aq. 0.1 M). So, [Cu2+] = 0.1 M,…

Q: 1) What is the different between volumetric titration and condumetric titration?

Q: Draw the resonance structures by hybrid orbitals. NH2 NH2

Q: An electrochemical cell is made from the electrode systems shown by these half-equations. Ag (aq) +…

Q: Problem: In standardizing a solution of NaOH against 1.431g of KHC8H4O4, the analyst uses 35.50 mL…

Q: Consider the voltaic cell {Cu(s)|Cu2+(aq. 0.89 M)||Ag+(aq, 0.48 M)|Ag(s)}. What is E0cell and Ecell…

Q: 5. Which of the following compounds would react the slowest with NaOCH2CH3 in CH3CH2OH. Br Br Br Br…

A: ->In presence of base reaction proceeds through Elimination reaction base can abstract beta…

Q: ch tin is plated out of the solution?

Q: oxidising agent.

Q: Radioisotopes have been used as tracers in a variety of applications because O radioactive isotopes…

A: The correct answer is given below

Q: For the titration of 20.0 ml of 0.400 M HCI{aq) with 0.400 M NaOH(aq): HCI(aq) + NaOH(aq) - NaCl(ag)…

A: we need to calculate the pH of HCl solution

Q: Calculate the vapor pressure for a 35.2% NaCl (m/m)% aqueous solution at 45°C. The vapor pressure of…

A: 35.2% NaCl (m/m) aqueous solution means 35.2 g NaCl present in 64.8 g water. Mass of water, m1 =…

Q: Determine the oxidation state of the transition metal in each of these coordination compounds.…

A: Oxidation state of metal ion is defined the total number of electrons that an atom either gains or…

Q: 2. Use the data given below to calculate the CI-CI bond energy.( 4HC(g) + O:(g) 2H,0(g) + 2C(g) AH…

Q: Complete the concept map below by filling up the boxes with the appropriate concepts using the…

A: We have to complete the given empty boxes. We know that the solution has two components, those are…

Q: An aqueous solution of PdCl,2 is electrolyzed for 83.4 seconds and during this time 0.1064 g of Pd…

Q: 1) What is the different between volumetric titration and condumetric titration?

Q: How does the presence and absence of magnesium and calcium ions in water have an impact on water's…

A: As this water moves through soil and rock, it dissolves very small amounts of minerals and holds…

Q: What is the major product of the reaction at the photo?

A: In an aromatic nucleophilic substitution reaction, a nucleophile attacks on the carbon atom of the…

Q: A voltaic cell is constructed from a standard Fe?+ Fe half cell (E° red %3D -0.440V) and a standard…

Q: How many milliliters of a 0.275 M NAOH solution is required to react with 0.450 L of CO, gas…

Q: Examine the following compound. This compound is a(n) CH3-CH,-C-H O alcohol O thiol O aldehyde O…

A: Identify the given compound---

Q: Enter electrons as e. Use smallest possible integer coefficients for ALL reactions. If a box is not…

Q: Select two reagents that will synthesize the following ether using Williamson ether synthe O a. None…

Q: Part A A 0.22 - mol sample of a weak acid with an unknown pK, was combined with 10.0 mL of 3.10 M…

A: Buffer solution: buffer solution is an aqueous solution consisting of a mixture of a weak acid(HA)…

Q: Why are Lewis structures important?

A: Hii there, As there are multiple question posted. we are answering first question. If you need…

Q: If a dose rate from a sample of In-111 was found to be 5.0 x 10-5 ( to the negative 5)mSv per hour…

A: Solution- a dose rate from a sample of In-111 was found to be 5.0 x 10-5 ( to the negative 5)mSv per…

Q: When the following equation is balanced properly under acidic conditions, what are the coefficients…

A: Cl2 + Cu2+ ......> ClO3- + Cu+ At anode, oxidation takes place . And at cathode, reduction takes…

Q: HCI is slightly soluble in water O True O False Systematic Errors: have a definite value, an…

A: HCl is a strong electrolyte and it is very soluble in water. so the given statement is false.

Q: Balanced Equation: Oxidized: Reduced: 6) H:O: + 10 → I + 0: (acidic solution) Balanced Equation:…

A: Balanced under acidic conditions ------

Q: Uranium is extracted from aqueous nitric acid solution to an equal volume of the organic solvent in…

A: The number of extraction are needed to be find out to achieve a percentage efficiency of 5.95%.

Q: 2. Find the value for the equilibrium constant, K, at 25 °C (298 K) for the following reaction. The…

Q: Но OH FeCl3 + H3C `CH3

Q: Of the following the entropy of gaseous is the largest at 25 C and 1 atm. OA C3HB OBỊ CH6 ODỊ CH6

A: Entropy means randomness of the molecules ,the small molecules has more randomeness ,so its entropy…

Q: 14. For each of the following series of compounds, which one has the most red-shifted C-0 stretch?…

Q: If the weight of calcium oxalate is 2g and weight of ammonium oxalate is 0.15 g then te percentage…

A: Given that Weight of calcium oxalate = 2.0 g Weight of ammonium oxalate = 0.15 g Molar mass of…

Q: ASSAY Calibration solutions Calibration solutions of naproxen in the range 5 – 25 μg/mL were…

A: Solution- Data given- 12.3819 g were crushed to a fine powder, acetic acid (0.05 M)

Q: Exercise 32. Draw the products of each reaction. 1. + HI 1. CHC- CH2CH3 CH3 H 2. H30* 3. 1. HC=C'Na*…

Q: kercise 29. Draw the products of each reaction. 1. HO. РСС 2. OH SOCI2 pyridine HCI OH ZnCl2 3.

A: ->PCC is oxidizing agent which can oxidize primary alcohol to aldehyde group. ->SOCl2 pyridine…

Concept explainers

Acid Base Titration

An acid-base titration is the method of quantitative analysis for determining the concentration of an acid and base by exactly neutralizing it with a standard solution of base or acid having known concentration.

Question

Refer to the acid-base titration curve shown below.
What is the pKa of the acid present at the half-
equivalence point?
13
11
9.
7
3
10
20
30
40
Volume of Titrant Added, mL
Select one:
а. 5.0
b. 9.0
С. 3.1
d. 12.7
е. 4.5
Hd

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 2 steps with 1 images

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

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

Each of the solutions in the table has the same volume and the same concentration, 0.1 M. Which solution requires the greatest volume of 0.1-M NaOH to titrate to the equivalence point? Explain your answer.
Malonic acid (HO2CCH2CO2H) is a diprotic acid. In the titration of malonic acid w ith NaOH, stoichiometric points occur at pH = 3.9 and 8.8. A 25.00-mL sample of malonic acid of unknown concentration is titrated with 0.0984 M NaOH, requiring 31.50 mL of the NaOH solution to reach the phenolphthalein end point. Calculate the concentration of the initial malonic acid solution. (Sec Exercise 113.)
Draw the general titration curve for a strong acid titrated by a strong base. At the various points in the titration, list the major species present before any reaction takes place and the major species present after any reaction takes place. What reaction takes place in a strong acidstrong base titration? How do you calculate the pH at the various points along the curve? What is the pH at the equivalence point for a strong acidstrong base titration? Why?
A base (B) that is dibasic is titrated with a strong acid. At what added volume (V) is the pH of the solution equal to pKa2 of the diprotic acid, Ve1 and Ve2 are the titrant volumes at the first and second equivalence points, respectively. a)V=2Ve2 b)V=0.75Ve2 c)V=Ve2 d)V=Ve1 e)V=0.5Ve1
10. In a titration of a strong base with a weak acid at 25oC, the theoretical pH at equivalence point is: less than 7.00 exactly 7.00 greater than 7.00 not enough information is given to determine
For the titration of 25.0mL 0.135MNH2NH2(aq)at 25°Cwith 0.135MHBr(aq), calculate the pH (a) at the half equivalence point; (b) at the equivalence point; and (c) 3.00mL of HBrpast the equivalence point.The Kb of NH2NH2is 1.3 x 10-6. a. pH =____________ b. pH =____________ c. pH =____________
36.44mL of NaOH are titrated with a known conentratin of HCl (0.35M0. calculate the moles of NaOH at the end point if 24.35mL of HCl were used(NaOH MW:40g/nol,HCl:36g/mol A.8.5 moles HCl B.0.14 moles HCl C.0.0096 moles HCl D.0.0085 moles HCl
A weak monoprotic acid is titrated with 0.100 MNaOH. It requires 50.0 mL of the NaOH solution to reach the equivalence point. After 25.0 mL of base is added, the pH of the solution is 3.52. Estimate the pKa of the weak acid. Express your answer using three significant figures.
Titration of 10.00 mL of a 0.444M solution of HCI with a solution of LiSH required 23.2 mL of the LiSH solution to reach the end point. What is the molar concentration of LiSH? HCL + LiSH -> LiCI+H2S a. 0.191M b. 0.223 C. 0.546 d. 0.229
A student was given an unknown solution monoprotic acid to analyze. The student decided to use potentiometric titration to analyze the pKa of the unknown acid. The student took a 50mL sample and used a standardized 0.155 M NaOH titrant to generate the data below: Vtit, mL pH Vtit, mL pH 2.0 3.42 8.5 4.27 3.0 3.53 9.5 4.66 4.0 3.61 10.5 7.71 5.0 3.74 11.5 9.11 6.0 3.87 12.5 9.95 7.0 4.05 13.5 10.36 What is the concentration of the unknown acid?
A student was given an unknown solution monoprotic acid to analyze. The student decided to use potentiometric titration to analyze the pKa of the unknown acid. The student took a 50mL sample and used a standardized 0.155 M NaOH titrant to generate the data below: Vtit, mL pH Vtit, mL pH 2.0 3.42 8.5 4.27 3.0 3.53 9.5 4.66 4.0 3.61 10.5 7.71 5.0 3.74 11.5 9.11 6.0 3.87 12.5 9.95 7.0 4.05 13.5 10.36 The equivalence volume using the second derivative plot is 10.2 mL. What is the concentration of the unknown acid in M?
One of the titrated unknowns is citric acid. Citric acid is a triprotic acid but the first twoequivalence points are not well-defined (as seen in the reference graphs on the nextpage). Discuss one possible reason why these first two equivalence points are notclearly defined on your curve and how you determined the third pKa value of citric acidusing the information you extracted from the titration curve.