Consider two acids: HCO2H (formic acid, pKa = 3.8) and pivalic acid [(CH3)3CCO,H, pK = 5.0].(a) Which acid has the larger K? (b) Which acid is the stronger acid? (c) Which acid forms thestronger conjugate base? (d) When each acid is dissolved in water, for which acid does theequilibrium lie further to the right?%3DThe pKa values in Table 2.1 span a large range (-7 to 50). The pK, scale is logarithmic.small difference in pK, translates into a large numerical difference, For example, the diffebetween the pK, of NH3 (38) and CH2=CH, (44) is six pKa units. This means that NH, isone million times more acidic than CH,=CH,.

Given, pKa of HCOOH = 3.8 pKa of (CH3)3CCOOH = 5.0 a). Which has the larger Ka value = ? b).…

Consider two acids: HCO2H (formic acid, pKa = 3.8) and pivalic acid [(CH3)3CCO;H, pK = 5.UJ. (a) Which acid has the larger K? (b) Which acid is the stronger acid? (c) Which acid forms the stronger conjugate base? (d) When each acid is dissolved in water, for which acid does the equilibrium lie further to the right?

Consider two acids: HCO2H (formic acid, pKa = 3.8) and pivalic acid [(CH3)3CCO;H, pK = 5.UJ. (a) Which acid has the larger K? (b) Which acid is the stronger acid? (c) Which acid forms the stronger conjugate base? (d) When each acid is dissolved in water, for which acid does the equilibrium lie further to the right?

Chemistry

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ISBN:9781305957404

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

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Ionic Equilibrium

Chemical equilibrium and ionic equilibrium are two major concepts in chemistry. Ionic equilibrium deals with the equilibrium involved in an ionization process while chemical equilibrium deals with the equilibrium during a chemical change. Ionic equilibrium is established between the ions and unionized species in a system. Understanding the concept of ionic equilibrium is very important to answer the questions related to certain chemical reactions in chemistry.

Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.

Bronsted Lowry Base In Inorganic Chemistry

Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.

Question

Consider two acids: HCO2H (formic acid, pKa = 3.8) and pivalic acid [(CH3)3CCO,H, pK = 5.0].
(a) Which acid has the larger K? (b) Which acid is the stronger acid? (c) Which acid forms the
stronger conjugate base? (d) When each acid is dissolved in water, for which acid does the
equilibrium lie further to the right?
%3D
The pKa values in Table 2.1 span a large range (-7 to 50). The pK, scale is logarithmic.
small difference in pK, translates into a large numerical difference, For example, the diffe
between the pK, of NH3 (38) and CH2=CH, (44) is six pKa units. This means that NH, is
one million times more acidic than CH,=CH,.

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