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A weak base has a K₁ of 5.6x104, determine the pKь of the base. 3.25 6.36 7.64 10.75

Chemistry & Chemical Reactivity

9th Edition

ISBN:9781133949640

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter16: Principles Of Chemical Reactivity: The Chemistry Of Acids And Bases

Section: Chapter Questions

Problem 4PS: What are the products of each of the following acid-base reactions? Indicate the acid and its...

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Question

A weak base has a K₁ of 5.6x104, determine the pKь of the base.
3.25
6.36
7.64
10.75

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Similar questions

The base B has pKb 5.00. (a) What is the value of pKa for the acid BH? (b) At what pH is [BH] [B]? (c) Which is the principal species, B or BH, at pH 7.00? (d) What is the quotient [B]/[BH] at pH 12.00?
Consider a buffer solution containing an acid with a pKa of 2.3 and an acid concentration that is one fourth the concentration of the conjugate base. What is the pH of the solution?
What is the pH of a buffer solution that contains 0.180 M of a fictitious base and 0.135 M of its conjugate acid? The pK b of the base is 5.720.
A weak base has a Kü of 5.6x10¹4, determine the pK, of the base. O 10.75 O 7.64 O 3.25 O 6.36
What is the pKb of the conjugate base of a weak acid that has a pKa equal to 5.29 at 25ºC?
Determine whether the statements are true or false. ( a. The stronger the base, the smaller the pKp. b. The stronger the base, the smaller the Kp. c. The stronger the base, the smaller the pka of its conjugate acid. d. The stronger the base, the smaller the Ka of its conjugate acid.
5. Acetic acid was dissolved in water to a concentration of 0.10 mol.L-!. The pKa of acetic acid is 4.8. а. What are the chemical species in solution at equilibrium? b. What is the pH of the solution at equilibrium? What are the concentrations of each reactant and product (except water) at equilibrium? с.
Solubility of gases in water increases with increasing mass. Explain? What is the relationship between the value of pKa and the strength of a weak acid?
If the Ka of the conjugate acid is 8.59 x 10-4, what is the pKb for the base?
1. The ionization constant (K») of aniline (C6HSNH2) is 2.35 x 10-5, If 7.285 grams of aniline is dissolved in 100.0 mL of water, what are the equilibrium concentration of all species present? 2. A certain acidic vitamin is essential for all mammals since it plays a role in DNA repair and cell signaling. A 0.439 M solution of this acid is found to have a pH of 2.607. Based on the table below, what most likely is the identity of this unknown acid?
1. The ionization constant (Kb) of aniline (C6H5NH2) is 2.35 x 10^-5. If 7.285 grams of aniline is dissolved in 100.0 mL of water, what are the equilibrium concentration of all species present?2. A certain acidic vitamin is essential for all mammals since it plays a role in DNA repair and cell signaling. A 0.439M solution of this acid is found to have a pH of 2.607. Based on the table below, what most likely is the identity of thisunknown acid?
One way to determine the predominant species at equilibrium for an acid-base reaction is to say that the reaction arrow points to the acid with the higher value of pK. For example, NH, + H,0 NH, + H,O+ pK. pk, 9.24 pK-1.74 NH,+ + OH--→ NH, + H,0 рк, 9.24 pK, 15.7 Explain why this rule works.

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