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The solubility of benzoic acid (HC 7 H 5 O 2 ), is 0.34 g/100 mL in water at 25°C and is 10.0 g/100 mL in benzene (C 6 H 6 ) at 25°C. Rationalize this solubility behavior. ( Hint: Benzoic acid forms a dimer in benzene.) Would benzoic acid be more or less soluble in a 0.1- M NaOH solution than it is in water? Explain.

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Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243

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BuyFindarrow_forward

Chemistry: An Atoms First Approach

2nd Edition
Steven S. Zumdahl + 1 other
Publisher: Cengage Learning
ISBN: 9781305079243
Chapter 10, Problem 91AE
Textbook Problem
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The solubility of benzoic acid (HC7H5O2),

Chapter 10, Problem 91AE, The solubility of benzoic acid (HC7H5O2), is 0.34 g/100 mL in water at 25C and is 10.0 g/100 mL in

is 0.34 g/100 mL in water at 25°C and is 10.0 g/100 mL in benzene (C6H6) at 25°C. Rationalize this solubility behavior. (Hint: Benzoic acid forms a dimer in benzene.) Would benzoic acid be more or less soluble in a 0.1-M NaOH solution than it is in water? Explain.

Interpretation Introduction

Interpretation: The solubility of Benzoic acid should be explained.

Concept Introduction:

Solubility:

  • The solubility of the solute is depends on the many factors and the polarity of solute is one of that.
  • The same polarity of solvent is favored the solubility of solute.
  • The polarity of the compound is determined by its structure.

Explanation of Solution

Record data from given:

                          0.34 g/100 mL in water at 25°C10.0 g/100 mL in benzene at 25°C

To explain the solubility of benzoic acid in Water and Benzene.

                                    

                            Fig 1                                          Fig 2

  • The benzoic acid is containing oxygen with lone pairs see Fig 1 and it is having electro negativity so it will make a hydrogen-bonded with another molecule to form a dimer

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Chemistry: An Atoms First Approach
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