The molar conductivity of a 0.05 M solution of a weak base (B) is 4.9 x 10-1 mSm2/mol and the sum of the limiting ionic conductivities for BH+ and OH‑ is 23.7 mSm2/mol. What is the value of the base constant Kb?

The molar conductivity of a 0.05 M solution of a weak base (B) is 4.9 x 10-1 mSm2/mol and the sum of the limiting ionic conductivities for BH+ and OH‑ is 23.7 mSm2/mol. What is the value of the base constant Kb?

Fundamentals Of Analytical Chemistry

9th Edition

ISBN:9781285640686

Author:Skoog

Publisher:Skoog

Chapter10: Effect Of Electrolytes On Chemical Equilibria

Section: Chapter Questions

Problem 10.5QAP

See similar textbooks

Related questions

Q: Using activity coefficients, find the pH and fraction of dissociation of 50.0 mM hydroxybenzene…

A: Given:-Concentration of phenol = 50.0mM = 0.050MConcentration of diBr = 0.050MSize of C6H5O- =…

Q: What is the pH of a 0.260 M solution of aniline (C6HSNH2, Kb = 4.3 x 10-10)?

A: Given, MOlarity of aniline = 0.260M

Q: The equivalent conductivity of 0.0108 molar aniline hydrochloride is 118,6 ohm-1 cm-1 . When the…

A: Since you have posted multiple questions, we are entitiled to answer only first question in a…

Q: What is the pH of a 0.290 M solution of aniline (C6H5NH2, Kb = 4.3 x 10-10)?

A: In the given question we have to calculate the pH of Aniline. concentration of Aniline = 0.290 M Kb…

Q: Acetic acid (concentration 0.00128 mol / lit) has an equivalent conductivity value of 0.04815 ohm^-1…

A: Dissociation constant of weak acid, acetic acid can be determined by finding the value of degree of…

Q: do so, they need to first prepare 500.0 mL of 1.000 M of the Tris buffer solution of pH 7.5000. The…

Q: If the cell constants of 0.2 cm^-1 and the molar conductivity of H+ and Cl- are known, 350…

Q: . A linear plot of molar conductivity versus square root of concentration for AB2 electrolyte gives…

Q: A solution is 0.5 molar in MgSO4, 0.1 molar in AICI3, and 0.2 molar in (NH4)2SO4. What is the total…

Q: Calculate the activity coefficient of K* in 0.050 M KNO3.

A: Given: 0.050M KNO3 To find: activity coefficient of K+.

Q: ?Which statement is correct about a strong electrolyte It is partially ionized in aqueous solution.…

A: Electrolyte : These are the substances which when dissolved in a solvent converted into cations and…

Q: Calculate the masses of (i) KNO3 and, separately, (ii) Ba(NO3)2 to add to a 0.110 mol kg−1 solution…

A: The ionic strength of the solution is given as

Q: Q.5 What are the activity coefficients for iron(III) and sulfate in an aqueous solution of 10 mM…

Q: 6. Estimate the mean ion activity coefficient and activity of a solution that is 0.01 mol/kg CaCl2…

Q: Calculate the ionic strength of 0.2 M CaCl2

Q: Q.2 What are the activity coefficients for iron(III) and sulfate in an aqueous solution of 10 mM…

A: An activity coefficient is a factor used in thermodynamics to account for deviations from ideal…

Q: Which compound should have the greatest molar conductivity? O KBr BaBr2 GaBr3 O PbBr4 O They should…

Q: True or False For strong electrolytes, such as hydrochloric acid, the molar conductivity decreases…

A: Strong electrolyte are those substance which dissociate completely. eg: HCl , KCl etc.

Q: 3. What is the percentage strength of a reagent solution prepared by dissolving 1.5 oz of silver…

A: The percentage of AgCl = 9.0% (option c).

Q: uestion 8 For strong electrolytes, such as hydrochloric acid, the molar conductivity decreases…

A: The answer is as follows:

Q: By what factor does [H+] change for a pH change of (a) 2.00units, (b) 0.50 units?

Q: For weak electrolytes, such as acetic acid, at very low concentrations the molar conductivity drops…

A: The conductance of a solution that contains one mole of electrolyte is known as molar conductance.…

Q: What is the pH and fraction of association of a 0.100 M solution of a weak base with Kb = 1.00 X…

Q: What is the ionic strength of 0.10 M ZnSO4?

A: A chemical compound consists of two or more different elements which are bonded with each other…

Q: Find the enthalpy of neutralization of 75.5mL 1.00M aqueous sodium hydroxide with 40.7mL 1.00M…

A: Given that,Volume of NaOH = 75.5 mLMolarity of NaOH = 1.00 MVolume of HCl = 40.7 mLMolarity of HCl =…

Q: Calculate the activity coefficient of K+ in 0.050 M KNO3.

Q: Calculate the molar ionic strength of a 0.6800 M copper (II) sulfide solution.

Q: Write the equation of dissociation for aniline Aniline (CH5NH2), an organic amine and a weak base…

Q: The activity coefficient of Zn²+ with ionic strength of 0.083 mol/L (a Zn2+ =0.6 nm) is: Please fill…

Q: The ionization constant (Ka ) equation of a monoportic weak, HA, acid is given by ca2 K = (1-0) The…

A: The solution is given below -

Q: If the cell constant for conduction is 0.2 cm1 and the molar conductivity of H* and Cl is 350…

Q: 5. The limiting molar conductivities, A°, of KCl, KNO; and AgNO3 are 149 S cm2 mol', 145.0 S cm2…

Q: If the specific conductance of a 0.02N acetic acid is 105.3 at 25oC, what is the ionization constant…

A: If basicity or acedity of the solution is 1 then normality will be equal to molarity.

Q: What is the pH of a 0,0100 mol.dm–3 solution of a weak, monoprotic acid with Ka = 3,4 x10^-3 at…

A: We have to calculate the pH of solution.

Q: 10-Analytical Molarity, Autoprotolysis, Amphiprotic solvent, Conjugate acid, Buffer solution,…

A: Definitions Analytical Molarity- It is the total no of moles of solute present in 1L of a solution.…

Q: Calculate the degree of dissociation (a) of acetic acid if its molar conductivity (Λm) is 39.05 S…

A: Degree of dissociation: It is defined as the fraction of a molecule that dissociates from a…

Q: Show that for a monovalent ion in water at 298 K, the Born solvation energy, Esol equals -164 / a…

A: Born solvation energy is the difference in the work which is resulted from the ion charging in…

Q: Describe the Henderson–Hasselbalch Approach?

A: An aqueous solution containing the mixture of a weak acid and its conjugate base is called as a…

Q: The activity coefficient of Ni2+ ion (a Ni2+ =0.6 nm) in a solution that has an ionic strength of…

Q: 3.5×104 M solution of ethanoic acid has conductivity of 4.25×105 S cm'. Determine the molar…

A: Given values: The molar conductivity is given as,

Q: The equivalent conductance of a 0.0140N solution of chloroacetic acid is 109.0 at 25 degrees C. What…

A: The equivalent conductance of an electrolyte is defined as the conductance of a volume of solution…

Q: Calculate the ionic strength of a solution that is 0.10 mol kg−1 in KCl(aq) and 0.20 mol kg−1 in…

A: The given data contains, moles of the solution in KCl = 0.10 mol kg-1 moles of the solution in…

Q: For a solution in which ionic strength, u = 5.0 x T

Q: Use activity coefficients to find the concentration of hydrogen ions in a solution of 50.0 mM…

Q: What is the dissociation factor "i" for non-electrolytes? O a. 0 O b. 3 O c. 1 O d. 2

A: Dissociation factor i for non electrolytic solution.

Q: The equivalent conductance of a 0.0140N solution of chloroacetic acid is 109.0 at 250C. What is the…

A: The ionization constant (Ka) of chloroacetic acid has to be given,

Q: Calculate the masses of (i) KNO3 and, separately, (ii) Ba(NO3)2 to add to a 0.110 mol kg−1…

A: According to the definition of ionic strength, We have two ions, K+ and NO3-, with charges of z=+1…

Q: Calculate the molar ionic strength of a 0.5800 M copper (III) sulfide solution.

A: Copper(III) sulfide is Cu2S3 . The molar ionic strength is calculated as follows: I=12∑i=1i=ncizi2…

Concept explainers

Potentiometric Titrations

Potentiometric titration is one of the important titration methods and is mainly carried out to characterize acid solutions. It follows a method similar to that of the normal titration technique, but the main difference is that there is no indicator used in the potentiometric titrations. Instead of using an indicator, electrodes are employed for monitoring the whole titration process. A scientist named Robert Behrend did the potentiometric titration for the first time, and it was done using the mercurous solution and potassium chloride.

Question

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

introduction

VIEW

explanation

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

The molar conductivity of 0.020 M HCOOH(aq) is 3.83 mS m2 mol-1. What is the value of pKa for formic acid?
If the cell constants of 0.2 cm^-1 and the molar conductivity of H+ and Cl- are known, 350 S.cm^2.mol^-1 and 76 S.cm^2.mol^-1, respectively, calculate the electrical conductivity of a 0.01 M HCl solution !
a)For the reaction given in Part A, how much heat is absorbed when 3.10 molmol of AA reacts? Express your answer numerically in kilojoules. b)For the reaction in Part A, ΔrS∘=25.0 J K−1 mol−1ΔrS∘=25.0 J K−1 mol−1. What is the standard Gibbs energy of reaction at 281 KK , ΔrG∘ (281K)ΔrG∘ (281K)? Express your answer numerically in kJ mol−1kJ mol−1.
Sodium acetate, NaCH3CO2, of mass 7.4 g is used to prepare 250 cm3 of aqueous solution. What is the pH of the solution?
1)The equivalent conductivity of 0.0108 molar aniline hydrochloride is 118,6 ohm-1 cm-1 . When the solution saturated with aniline the equivalent conductivity decreased to 103.6 ohm-1 cm-1 . The same concentration these equivalent conductivity of HCl is 411.7 ohm-1 cm2 . Calculate the hydrolysis degree of aniline hydrochloride. Explain the variation of the cell constant (K) with the amount of sample volume. 2) A strong electrolyte has an equivalent conductivity of 140 Ώ.cm . eq mol for a concentration of 2 x 10-4 eq.mol / L. The saturated solution corresponds to a concentration of 3.3 x 10-4 eq.mol / L and at an equivalent conductivity of 144.74 Ώ.cm . eq mol-1 . Determine the limit conductivity of this electrolyte. 3) Calculate the activity coefficient of the chloride ion in MgCl2 10-3 mol / L and in LaCl3 of the same concentration. What can you conclude from this?
Give some examples of secondary standard solutions, and give the reason
Calculate the masses of (i) Ca(NO3)2 and, separately, (ii) NaCl to add to a 0.150 mol kg−1 solution of KNO3(aq) containing 500 g of solvent to raise its ionic strength to 0.250.
How do you calculate the nominal of Na2S2O3 of the solution?
You are given a 27 % (w/v) solution of psicose. Molar mass: psicose (C6H12O6) = 180.156 g/mol. You dissolve 6.31 g of potassium formate in 250 mL of 0.25 M formic acid (HCOOH). This solution was then made up to a total volume of 500 mL with distilled water. Potassium formate (KHCO2): molar mass = 84.12 g/mol Calculate the pH of this solution given the pKa of formic acid = 3.77.
Estimate the pH of a solution of 0.50 M HCI(aq), assuming ideal behaviour. The mean activity coefficient at this concentration is 0.769. Calculate a more reliable value of the pH .
For biological and medical applications it is often necessary to consider proton transfer equilibria at body temperature (37 °C). The value of Kw for water at body temperature is 2.5 x 10-14 (a) What are the va lue of [H3O+) and the pH of neutral water at 37 °C. (b) What is the molar concentration ofOH- ions and the pOH of neutral water at 37 °C?
Write out the equilibrium expression for the solvation of Ag2CrO4 in water