Organic Chemistry
Organic Chemistry
6th Edition
ISBN: 9781936221349
Author: Marc Loudon, Jim Parise
Publisher: W. H. Freeman
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Chapter 3, Problem 3.14P
Interpretation Introduction

(a)

Interpretation:

The dissociation constant of an acid that has 4 pKa value is to be predicted.

Concept introduction:

Dissociation constant Ka is used to measure the strength of a Brønsted acid. There is an inverse relationship between the acidity of a Brønsted acid and its pKa value. Higher the value of pKa, weaker is the acid.

The formula used to calculate the value of pKa is shown below.

pKa=logKa

Interpretation Introduction

(b)

Interpretation:

The dissociation constant of an acid that has 7.8 pKa value is to be predicted.

Concept introduction:

Dissociation constant Ka is used to measure the strength of a Brønsted acid. There is an inverse relationship between the acidity of a Brønsted acid and its pKa value. Higher the value of pKa, weaker is the acid.

The formula used to calculate the value of pKa is shown below.

pKa=logKa

Interpretation Introduction

(c)

Interpretation:

The dissociation constant of an acid that has 2 pKa value is to be predicted.

Concept introduction:

Dissociation constant Ka is used to measure the strength of a Brønsted acid. There is an inverse relationship between the acidity of a Brønsted acid and its pKa value. Higher the value of pKa, weaker is the acid.

The formula used to calculate the value of pKa is shown below.

pKa=logKa

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6. Consider the following exothermic reaction below. 2Cu2+(aq) +41 (aq)2Cul(s) + 12(aq) a. If Cul is added, there will be a shift left/shift right/no shift (circle one). b. If Cu2+ is added, there will be a shift left/shift right/no shift (circle one). c. If a solution of AgNO3 is added, there will be a shift left/shift right/no shift (circle one). d. If the solvent hexane (C6H14) is added, there will be a shift left/shift right/no shift (circle one). Hint: one of the reaction species is more soluble in hexane than in water. e. If the reaction is cooled, there will be a shift left/shift right/no shift (circle one). f. Which of the changes above will change the equilibrium constant, K?
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