Answered: What is the pH at equivalence point,…

What is the pH at equivalence point, when 43. mL of HF (K₂ = 3.5 x 10-4) is titrated to completion with 20. mL of 0.20 M KOH. Submit your answer to 2 decimal places.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 81E: Which of the indicators in Fig. 14-8 could be used for the titrations in Exercises 61 and 63?

See similar textbooks

Related questions

Q: Part B Calculate the kilocalories needed to melt a 725 g ice sculpture at 0 °C and to warm the…

Q: Predict the products of the following reaction and predict the favored direction of equilibrium with…

Q: 4. Write the condensed formula of the following structures. H 3. H Н I N- hydroxylamine H-Q…

Q: Consider the following reaction where K = 1.80 x 104 at 298 K. NH4HS (8) NH3(g) + H₂S(9) A reaction…

A: Given -> Kc = 1.80 × 10-4 Moles of NH4HS = 0.0584 moles Moles of NH3 = 0.00833 moles Moles of…

Q: The decomposition of nitramide, O,NNH,, in water has the chemical equation and rate law O₂NNH₂(aq)…

A: The decomposition of nitramide, O2NNH2, in water has the following chemical equation and rate law…

Q: Practice for a Kinetics of the lodine-Clock Reaction

A: Concept Introduction: The reaction of H2O2 with KI in the presence of an acid: The I2 produced is…

Q: What is the atom in the image

A: The structure of atom is provided with nucleus and the electrons on the orbits. Counting of…

Q: Natural gas is a naturally occurring fossil fuel that is abundant in Alberta. Based on typical…

A: Note: Since you have asked multiple questions, we will solve the first question for you. If you want…

Q: Draw structural formulas for the products of the reaction shown below. CH₂CH₂-O-CHCH3 + HBr CH3

A: Given : structure of reactant

Q: Use thermochemical data given in the table to decide whether the equilibrium constant for each of…

A: Answer: In this question we have to find out whether the reaction is exothermic or endothermic by…

Q: what is the purpose of adding concentrated sulfuric acid to the product, 1-bromobutane after…

Q: Fill in the table with the information of Average rates of reaction from experimental data

A: Concept Introduction: The reaction of H2O2 with KI in the presence of an acid: The I2 produced is…

Q: Which of the following single-replacement A. Cu(NO3)2 (aq) + Pb (s) B. Cu (s) + Pb(NO3)2 (aq)…

A: A more reactive metal can replace a less reactive metal ion from the solution of the salt of the…

Q: what is the purpose of adding concentrated sulfuric acid to a product after distillation? Write the…

A: Distillation is a process of separating mixtures based on their boiling points. The mixture is…

Q: For the given processes, determine if AHxn and ASin are positive, negative, or zero. CH₂(g) +20₂(g)…

A: Answer:- This question is answered by using the simple concept of calculation of enthalpy of…

Q: A student performed three aqueous layer titrations in Part 1 and they reported the following…

A: To answer: Which determinations were the student's 'best two'? Calculate the percent difference for…

Q: plot the graph of the average volume and density vs year. Also, to label the axis

A: To plot the graph of Average Volume and density vs Year. Also, To label the axes

Q: For which pieces of lab equipment will mass measurements be recorded using the analytical balance?…

A: =>Analytical balance-: this measurement balance is used to measure small amount of masses…

Q: se the data to determine the entropy change AS rxn for this process: NH3(aq) + HOCl(aq) NH₂Cl(aq) +…

A: Solution:Given: chemical reaction NH3 + HOCl⇔NH2Cl + H2O

Q: The nonvolatile, nonelectrolyte aspirin, C₂H8O4 (180.1 g/mol), is soluble in diethyl ether,…

Q: Write the electron configuration of the following atoms and identify what Family and period do they…

A: The electronic configuration and the class of the elements are given below

Q: 14. How is the reactivity of isolated C=C double bonds different from the double bonds in benzene?…

A: We know in presence of light free radical mechanism will proceed and allylic free radical is more…

Q: Calculate the kilojoules released when 90.0 g of steam condenses at 100 °C, the liquid cools to 0…

A: Given data, mass of steam = 90.0 g Temperature at which it condenses = 100 °C Temperature till it…

Q: 1.38. Calculate the Boyle temperatures for carbon dioxide, oxygen, and nitrogen using the van der…

A: Boyle temperature is that particular temperature at which real gas tends to behave like ideal gas.…

Q: 6. Propose an efficient synthesis for each of the following transformations: a. b. 8- .OH -NO2 5-3…

A: nitration is a process in which there is the replacement of a hydrogen by nitro groups Kmno4 act as…

Q: Reaction 3 (copper (II) hydroxide → copper (II) oxide] Danger! Do not open the centrifuge until it…

A: Centrifugation

Q: uestions to review individually. Number answers are given for mathematical problems at the end o e…

A: Given reaction , 4Al + 3O2 ----->2Al2O3 To calculate mass of Al2O3

Q: Problem Statement: A 5.00 L N₂ gas sample at a pressure of 1.20 atm and temperature of 15.8°C has a…

Q: a block of metal weighing 65 grams was heated to 100.0 C. The warm metal was quickly transferred to…

A: Weight of metal block = 65 g Initial temperature of metal = 100 0 C Weight of water = 75 g Initial…

Q: Part F the energy needed to heat 12.6 και of silver from 112 °C to 275 °C IVE ΑΣΦΑ ? cal

A: The formula to calculate heat energy is given by: Q = mcΔT where: Q = heat energy (in calories) m =…

Q: 1. Provide the information missing in the reactions below. Stereochemistry and Regiochemistry may be…

A: Oxidation of alkenes with the help of ozone can give alcohols, aldehydes, ketones, or carboxylic…

Q: Chemical equations are written communications intended to describe chemical reactions happening…

A: Since you have posted a question with multiple sub-parts, we will only provide the solution to the…

Q: oxidation number of the transition metal ion in K2 Febr4 Cu+ with CH3CN to form a coordination…

A: The given question is related to transition metals. This question has three subparts. In one…

Q: The displacement volume of an automobile engine is 230 in3. What is this volume in liters

A: The displacement volume of an automobile engine is 230 in3 .We have to convert this volume in…

Q: .- Show the units in scientific notations: Five Milliampere (mA) = 5 x 10^-3 Twenty-Two Mega…

A: The question is based on unit conversion

Q: 1. 3. HO 5. HO. x H 2. 14. > He -애 XON 애 ㅅ 1 <

A: The names of the alcohols are given below -

Q: the energy lost when 79.9 g of water cools from 86.4 °C to 3.2 °C

A: We have to use the formula- Q=mc∆Twhere m=mass(g)C=heat capacity(calgoC)∆T=Temp changeQ=energy(cal)

Q: reaction vessel mol ¹12, mol 12, and 3.91 mol e at 493°C for the reaction of hydrogen and iodine to…

A: Given -> Volume=V = 13.9 L T = 493°C Mole of H2 = 0.873 mole Mole of I2 = 0.357 mole Mole of…

Q: trans-2-butene 233.11 IM Angle of Rotation Energy (kJ/mol) 26.92 butane 78.49 Energy (kJ/mol) 20.43…

A: Isomers which are formed by the rotation about carbon - carbon (single bond) are called…

Q: Molecule H₂O PC15 Lewis Dot structure Molecule geometry with bond angles Polarity

A: We have to draw the Lewis structures for H2O PCl5

Q: Given the following IR data, what is the most likely identity of the compound? Wavenumber (cm ¹)…

A: IR spectroscopy is an important tool for the determination of the functional group in the compound.…

Q: What is the vapor pressure of a pure sample of water at 37∘C, if a 0.50Msolution of BaCl2 has a…

A: BaCl2 is a non-volatile solute. Its presence in the solution causes the lowering of vapor pressure…

Q: When 273.55 grams of water are produced, 1.5429 × 1025 particles of potassium hydroxide were…

A: Answer: This question is based on stochiometric calculation where by using stoichiometric…

Q: what will be in the HNMR of the following compound? CH3CH₂CH=CHCH₂CH₂OH

A: The 1H NMR (Nuclear Magnetic Resonance) spectroscopy is a powerful tool for determining the…

Q: CH3CH₂ CH3 CH3 CH₂CH3 CH₂CH3

A: IUPAC name of the molecule based on nomenclature:

Q: Under certain conditions, the substance ammonium chloride can be broken down to form ammonia and…

Q: Nitrogen monoxide, NO, reacts with bromine, Br₂, to give nitrosyl bromide, NOBr. 2NO(g) + Br₂(g) →…

Q: НО ОН NaOH, H2O; Ac₂0 0 ОН

Q: At 500 C, cyclopropane (CaHe) reamanges to propene (CH₂-CH=CH₂). The reaction is first order, and…

A: Given, The rate constant of the reaction (k) = 6.7×10-4 S-1 The initial concentration of C3H6 =…

Q: How many mL of 0.600 M LiCl would be required to make a 0.0855 M solution of LiCl when diluted to…

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

What is the pH at equivalence point, when 43. mL of HF (K₂ = 3.5 x 10-4) is titrated
to completion with 20. mL of 0.20 M KOH.
Submit your answer to 2 decimal places.

Expert Solution

This question has been solved!

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

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Step by step

Solved in 3 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

Fifty cm3 of 1.000 M nitrous acid is titrated with 0.850 M NaOH. What is the pH of the solution (a) before any NaOH is added? (b) at half-neutralization? (c) at the equivalence point? (d) when 0.10 mL less than the volume of NaOH to reach the equivalence point is added? (e) when 0.10 mL more than the volume of NaOH to reach the equivalence point is added? (f) Use your data to construct a plot similar to that shown in Figure 14.10 (pH versus volume NaOH added).
A 0.400-M solution of ammonia was titrated with hydrochloric acid to the equivalence point, where the total volume was 1.50 times the original volume. At what pH does the equivalence point occur?
Two acids, each approximately 0.01 M in concentration, are titrated separately with a strong base. The adds show the following pH values at the equivalence point: HA, pH = 9.5, and HB, pH = 8.5. (a) Which is the stronger acid, HA or HB? (b) Which of the conjugate bases, A or B, is the stronger base?
Repeat the procedure in Exercise 61, but for the titration of 25.0 mL of 0.100 M pyridine with 0.100 M hydrochloric acid (Kb for pyridine is 1.7 109). Do not calculate the points at 24.9 and 25.1 mL.
A solution is made by diluting 25.0 mL of concentrated HCl (37% by weight; density = 1.19 g/mL) to exactly 500 mL. Calculate the pH of the resulting solution.
A solution of volume 0.500 L contains 1.68 g NH3 (Kb = 1.8 x 10^-5) and 4.05 g (NH4)2SO4. How many milliliters of 12 M HCI must be added to 0.500 K of the original solution to change its pH to 9.00?
What will be the pH of the buffer solution consisting of 94 mL butanoic acid (CH3CH2CH2COOH) 0.189 mol/L and 109 mL sodium butanoate (CH3CH2CH2COONa) 0.207 mol/L, if 10.9 mL KOH 0.5 mol/L is added?Give an answer to at least 3 decimal places.
A 15.0 mL sample of 0.25 M NH3 is titrated with 0.10 M HCl at 25 oC. What is the pH of the resulting solution when 19.50 mL of titrant have been added?Enter your answer with two decimal places. At 25 oC: Kb for NH3 = 1.8 x 10-5
Calculate the pH at the equivalence point of 61 ml solution containing a weak base, BOH, for instance NH4OH, often written as NH3 , titrated with 20 ml of a strong acid, HA , like HCl, with a concetration of 1.1 M. The base dissociation constant, Kb , is 1.60e-7. pH ← please insert your value
Calculate the pH of a solution containing 23 mL of 1.54 M of a weak weak base B OH, like NH4OH, or simply written as NH3, titrated with 17 ml of 1.01 M a strong acid AH, for instance HCl. The base dissociation constant, Kb , is 1.00e-5. pH ← please insert your value
If a 50 mL solution of 0.1 M HCN (Ka = 6.2 x 10-10) is titrated with 0.1 M NaOH, what is the pH of the resulting solution once the titration has reached its equivalence point? Report your answer to 2 decimal places.
When titrating a 25 mL solution of 0.20M CH3COOH with 0.10M KOH, you realize you forgot to add an indicator initially. You've added 10 mL of KOH to the flask of acid. Ka of CH3COOH = 1.8 x 10^-5 1) Calculate the pH at this point 2) What color would your solution be if you add 40 mL KOH more. And a few drops of clorophenol blue indicator at this point. Why?