A hypothetical weak acid, HA, was combined with NaOH in the following proportions: 0,20 mol HA, 0,08 mol NaOH. The mixture was diluted to a total volume of 1,0 L and the pH was found to be 4,80. a). What is the pKa of the acid?

A hypothetical weak acid, HA, was combined with NaOH in the following proportions: 0,20 mol HA, 0,08 mol NaOH. The mixture was diluted to a total volume of 1,0 L and the pH was found to be 4,80. a). What is the pKa of the acid?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter16: Applications Of Neutralization Titrations

Section: Chapter Questions

Problem 16.20QAP

See similar textbooks

Related questions

Q: The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial…

A: Value of pH is sued to measure acidity or basicity of a solution. Value of pH lies in the range from…

Q: Calculation of pH (SHOW CALCULATION FROM THE GRAPH IATTACH GRAPHI 2.Find out pH at equivalent to…

A: Plot of pH vs Volume of NaOH added

Q: Which of the following statements is/are correct at 25 °C? 1. Benzoate (C,H,O2) requires a Ka to…

A: To calculate the pH of weak acid and base we need their Ka and Kb values. Kb of lactate ion can be…

Q: The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial…

A: All the details are explained in handwritten solution.

Q: Given that pH + pOH = 14 and that the concentration of water in a solution of water is 55.5 M, show…

A: Introduction: The value of equilibrium constant Ka for weak acid in an aqueous solution predicts…

Q: If I’ve got 20.0 grams of tartaric acid with a (first ionization) pKa = 2.91. If I dissolve this…

A: The formula of tartaric acid is C4H6O6. Molar mass of C4H6O6 = Atomic mass of C X 4 + Atomic mass of…

Q: In an acidic solution with a pH of 3.4, 78% of the acid is ionized. What is the pKa of the acid?

A: pH is defined as negative logarithm of hydrogen ions present in the solution.

Q: The Ka of a weak acid is 3 x 10^-12 What is the pKa of this acid?

A: Ka which is dissociation constant of acid is given 3*10^-12 Pka = ?

Q: Consider the acid HXOy where X is a halogen that is less electronegative than oxygen. Which of the…

Q: Calculate the acid ionization constant (pKa) for the acid with a 0.775 M solution of a weak acid…

A: Given data of the following:: [weak acid] = 0.775 M = [HA] pH = 3.38 pka = ?

Q: A student is given an antacid tablet that weighs 5.9200 g. The tablet is crushed and 4.8270 g of the…

A: Given : Volume of NaOH required to neutralise stomach acid after antacid = 11.7 mL And volume of…

Q: 18. Calculate the pH of the solution formed when 12.0g of sodium fluoride (0.286mol) (NaF, FW- 41.99…

A: For a buffer- pH = pKa + log[Base][Acid] Now, pKa = - log Ka = 3.19 [Acid] = 0.5 M [Base] = 0.286…

Q: Consider the molecule, pentanoic acid which has a pKa of 4.81: H3C OH At each of the following pH…

Q: In the laboratory, a general chemistry student measured the pH of a 0.362 M aqueous solution of…

A: Equilibrium constant for reactions depicting acidic behavior of compounds (liberation of hydronium…

Q: beaker contains a total concentration of 0.33 molar of weak acetic acid with pKa=4.27 and pH=2.02.…

A: Initial concentration= 0.33 M pKa= 4.27 pH= 2.02

Q: 3. Some projection models put the carbon dioxide concentration at 1255 ppm by the year 2100.…

A: Henry's law: It states that the partial pressure of that gas above the liquid is directly…

Q: For a weak acid with a pKa of 6.0, show how you would calculate the ration of acid to salt at pH 5.

Q: At what pH is 50% of a compound, with a pKa = 7.3, in its basic form?

A: The Henderson-Hasselbatch equation makes it possible to calculate precisely how much compound is…

Q: A weak acid, HA, has a pKa of 4.838. If a solution of this acid has a pH of 4.675, what percentage…

A: Given:pKa = 4.838pH =4.675

Q: A student is given an antacid tablet that weighs 5.6622 g. The tablet was crushed and 4.3221 g of…

Q: A student determines that the value of pKa for CH3COOH = 4.57 . What is the value of Ka?

A: Carboxylic acids (containing -COOH), such as acetic and lactic acids, normally have a Ka constant of…

Q: How does pKa relate to acid strength?

A: For any weak acid, let's say HA, pKa is the relationship between the dissociation constant of acid.…

Q: Hypochlorous acid, HClO, has a pKa of 7.54. What is [ ClO− ] in 0.115 M HClO? [ ClO− ] = × 10…

A: Given:Pka = 7.54[HClO] = 0.115 M

Q: Oleic acid (which can be denoted as HOL), is a weak acid. Considering its sodium salt, sodium oleate…

A: We have to calculate the pKa of the HOL.

Q: What are the [H,O*| and [OH] of Diet Coke that has a pH of 3.17? ()

Q: find the pH of 1.00 L of solution containing 0.030 mol HA (pKa = 2.50) and 0.015 mol NaA. What would…

Q: What is the pKa value of Tris-HCl?

A: The molecular formula of Tris-HCl is: NH2C(CH2OH)3 ·HCl

Q: Which of the following statements is/are correct at 25 °C? 1. Benzoate (C,H;O2) requires a Ka to…

A: To determine pH we need Ka or Kb value. Which among Ka or Kb is used depends on the nature of…

Q: Which conjugate acid/base pair could be used to create a pH 3.20 buffer solution with the largest…

A: Buffer works well when - pH = pKa Ratio of [Conjugate base] / [Acid] = 1:1

Q: Oleic acid (which can be denoted as HOL), is a weak acid. Considering its sodium salt, sodium oleate…

Q: The pKa for the first protonation of nicotine (2) is 8.02. What is the pH and the fraction of…

Q: A buffer solution is made using a weak acid, HA . If the pH of the buffer is 7 and the ratio of [A−]…

Q: Which solution is closest to the pKa? Calculate the pH of the solutions and the change in pH after…

A: Since you have posted a question with multiple sub-parts, we will solve first three subparts for…

Q: The pKa of a particular weak acid is 4.85. What is the pH of the weak acid solution when exactly…

Q: A 0.030 M solution was prepared by dissolving potassium valinate in 1 L of water. What is the pH of…

A: pH is defined as the negative logarithm of hydrogen ion concentration present in the solution. pH =…

Q: Arrange the following acids in order of decreasing acid strength, 1 being the weakest and 4 being…

A: Ka is the dissociation constant of acid. Higher the value Ka, more is its dissociation so stronger…

Q: For each of the following acid-base pairs, give the value of the equilibrium constant for reaction.…

A: The equilibrium constant K, describes the relationship between the reactants and the products in a…

Q: pkal pK₂2 Phosphoric acid, H, PO, (aq), is a triprotic acid, meaning that one molecule of the acid…

Q: At what pH is the concentration of a compound, with a pKa = 3.7, 10 times greater in its acidic form…

A: Given information: pKa = 3.7 [Acid] = 10[Base]

Q: The plot shows an oxygen-binding curve for human hemoglobin. Y (fractional saturation) 1.0 0.5 0 I 2…

A: Oxygen binding curve:--This curve shows the binding of oxygen to haemoglobin and tells about…

Q: The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial…

A: Given that pH of weak monoprotic acid = 3.15 pKa for weak monoprotic acid = 5.74 For weak acid, pH…

Q: The pka of a particular weak acid is 4.85. What is the pH of the weak acid solution when exactly…

Q: The pKa of HX is 9.34. Calculate the pH of a 0.418 M solution of HX.

A: We are authorized to answer one question at a time, since you have not mentioned which question you…

Q: Calculate the degree of ionization of morphine, pKa 8.0, in a solution with a pH of 2.2. Predict how…

A: The question is placed on the concept of equilibrium. we have to identify degree of dissociation of…

Q: You need a buffer with a pH = 12. You have solid Na3PO4and 1.00 M HCl, and water. The buffer must…

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

A hypothetical weak acid, HA, was combined with NaOH in the following
proportions: 0,20 mol HA, 0,08 mol NaOH. The mixture was diluted to a total
volume of 1,0 L and the pH was found to be 4,80. a). What is the pKa of the acid?

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 2 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

Using the concentrations 0.100M and 0.1766M, and the pKa of 3.752, what is the theoretical pH of a buffer solution?
What is the pH when preparing a solution od 1 mol NaOH and 2 mol of solid NaH2PO4? The pKa's of phosphoric acid are: 2.1, 7.2, and 12.4.
describe the curve and why pH = pka at half equivalence point
Given a theoretical acid, HA, with a pKa of 6.52. Calculate the pH of 30.0mL of 0.400M HA, when it is titrated with 0.150M Sr(OH)2 and calculate the pH for the following % titrant: 0.00%, 50.0%, 96.0%, 100.%, 105.% of eq. pt.
What will be the pH of a buffer solution containing an acid with a pKa of 5.4 with an acid concentration equivalent to that of its conjugate base?
The pH of an aqueous solution of weak monoprotic acid is 3.15. What is the initial concentration of the acid if the pKa of the acid 5.74?
To rule out metabolic acidosis in a patient's blood sample, the total carbon dioxide content should be measured (HCO3-+CO2), this was determined by acidifying the sample and measuring the volume of CO2 released. The concentration of H2CO3 was 28.5 mmol/L, the pH of the blood at 37 ℃ is 7.48 with a pka of 6.10, what is the concentration of HCO3- in mmol/L in the blood? a) 27.36b) 22.77c) 28.50d) 29.60
For a weak acid with a pKa of 6.0, show how you would calculate the ration of acid to salt at pH 5.
HIn(aq) + H2O(l) H3O+(aq) + In-(aq)red yellowThe acid base indicator methyl orange is red at pH values below 3 and is yellow at pH values above 6. Usingyour knowledge of pH, indicators and pKa values, predict the pKa of methyl orange.
The measured pH of a 0.100 M solution of triethylamine (NEt3) is 11.68. What pKa of triethylammonium (HNEt3+) is implied by this data? Enter your response to the nearest 0.01.
What is the pKb of the conjugate base of a weak acid that has a pKa equal to 3.52? (temperature is 25ºC)
What is the pKa value of Tris-HCl?