The reason for no crystallization of the sulfanilamide in the give experimental procedure needs to be explained. Concept Introduction : Crystallization is explained as a procedure by which formation of crystal or solid takes place by precipitating them from the solution. It takes place by either supercooling the solution liquid or by supersaturated solvent.

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Answer 1

Question

Chapter 2, Problem 1Q

Interpretation Introduction

Interpretation:

The reason for no crystallization of the sulfanilamide in the give experimental procedure needs to be explained.

Concept Introduction:

Crystallization is explained as a procedure by which formation of crystal or solid takes place by precipitating them from the solution. It takes place by either supercooling the solution liquid or by supersaturated solvent.

Expert Solution & Answer

Answer to Problem 1Q

Crystallization of sulfanilamide did not occur because of the proper ratio of solute and solvent is not taken in dissolving.

Explanation of Solution

Given Information:

10 mL volume of 95% ethyl alcohol is added to impure sulfanilamide of mass 0.10 g. After dissolving the solid, solution is cooled to room temperature and placed on ice-water bath for crystallization.

Sulfanilamide contains both polar sulfonamide,amine and non-polar benzene groups in its molecule, Thus, to solvate it properly, it requires a solvent of intermediate polarity. Solution of 95% ethyl alcohol contains 5% water (which is highly polar) so it is a good choice.The problem in the given experiment is not with the chosen solvent pair, but with the amount of the solvent used for dissolving the solute. At high temperatures, small quantity of solvent is to be taken for dissolving maximum quantity of solute for recrystallization, which then can be extracted when the solution is cooled, otherwise the solute would not be removed as crystals.

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1, How many signals do you expect in the H NMR spectrum for this molecule? Write the answer below. Also, in each of the drawing areas below is a copy of the molecule, with Hs shown. In each copy, one of the H atoms is colored red. Highlight in red all other H atoms that would contribute to the same signal as the H already highlighted red. Note for advanced students: In this question, any multiplet is counted as one signal. Number of signals in the 'H NMR spectrum. For the molecule in the top drawing area, highlight in red any other H atoms that will contribute to the same signal as the H atom already highlighted red. If no other H atoms will contribute, check the box at right. No additional Hs to color in top molecule For the molecule in the bottom drawing area, highlight in red any other H atoms that will contribute. to the same signal as the H atom already highlighted red. If no other H atoms will contribute, check the box at right. No additional Hs to color in bottom molecule Check…

Incorrect Row 2: Your answer is incorrect. Consider this molecule: How many H atoms are in this molecule? 22 How many different signals could be found in its 'H NMR spectrum? 12 Note: A multiplet is considered one signal.

Answer 2

Question

Chapter 2, Problem 1Q

Interpretation Introduction

Interpretation:

The reason for no crystallization of the sulfanilamide in the give experimental procedure needs to be explained.

Concept Introduction:

Crystallization is explained as a procedure by which formation of crystal or solid takes place by precipitating them from the solution. It takes place by either supercooling the solution liquid or by supersaturated solvent.

Expert Solution & Answer

Answer to Problem 1Q

Crystallization of sulfanilamide did not occur because of the proper ratio of solute and solvent is not taken in dissolving.

Explanation of Solution

Given Information:

10 mL volume of 95% ethyl alcohol is added to impure sulfanilamide of mass 0.10 g. After dissolving the solid, solution is cooled to room temperature and placed on ice-water bath for crystallization.

Sulfanilamide contains both polar sulfonamide,amine and non-polar benzene groups in its molecule, Thus, to solvate it properly, it requires a solvent of intermediate polarity. Solution of 95% ethyl alcohol contains 5% water (which is highly polar) so it is a good choice.The problem in the given experiment is not with the chosen solvent pair, but with the amount of the solvent used for dissolving the solute. At high temperatures, small quantity of solvent is to be taken for dissolving maximum quantity of solute for recrystallization, which then can be extracted when the solution is cooled, otherwise the solute would not be removed as crystals.

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Answer 3

Question

Chapter 2, Problem 1Q

Interpretation Introduction

Interpretation:

The reason for no crystallization of the sulfanilamide in the give experimental procedure needs to be explained.

Concept Introduction:

Crystallization is explained as a procedure by which formation of crystal or solid takes place by precipitating them from the solution. It takes place by either supercooling the solution liquid or by supersaturated solvent.

Expert Solution & Answer

Answer to Problem 1Q

Crystallization of sulfanilamide did not occur because of the proper ratio of solute and solvent is not taken in dissolving.

Explanation of Solution

Given Information:

10 mL volume of 95% ethyl alcohol is added to impure sulfanilamide of mass 0.10 g. After dissolving the solid, solution is cooled to room temperature and placed on ice-water bath for crystallization.

Sulfanilamide contains both polar sulfonamide,amine and non-polar benzene groups in its molecule, Thus, to solvate it properly, it requires a solvent of intermediate polarity. Solution of 95% ethyl alcohol contains 5% water (which is highly polar) so it is a good choice.The problem in the given experiment is not with the chosen solvent pair, but with the amount of the solvent used for dissolving the solute. At high temperatures, small quantity of solvent is to be taken for dissolving maximum quantity of solute for recrystallization, which then can be extracted when the solution is cooled, otherwise the solute would not be removed as crystals.

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Answer 4

Question

Chapter 2, Problem 1Q

Interpretation Introduction

Interpretation:

The reason for no crystallization of the sulfanilamide in the give experimental procedure needs to be explained.

Concept Introduction:

Crystallization is explained as a procedure by which formation of crystal or solid takes place by precipitating them from the solution. It takes place by either supercooling the solution liquid or by supersaturated solvent.

Expert Solution & Answer

Answer to Problem 1Q

Crystallization of sulfanilamide did not occur because of the proper ratio of solute and solvent is not taken in dissolving.

Explanation of Solution

Given Information:

10 mL volume of 95% ethyl alcohol is added to impure sulfanilamide of mass 0.10 g. After dissolving the solid, solution is cooled to room temperature and placed on ice-water bath for crystallization.

Sulfanilamide contains both polar sulfonamide,amine and non-polar benzene groups in its molecule, Thus, to solvate it properly, it requires a solvent of intermediate polarity. Solution of 95% ethyl alcohol contains 5% water (which is highly polar) so it is a good choice.The problem in the given experiment is not with the chosen solvent pair, but with the amount of the solvent used for dissolving the solute. At high temperatures, small quantity of solvent is to be taken for dissolving maximum quantity of solute for recrystallization, which then can be extracted when the solution is cooled, otherwise the solute would not be removed as crystals.

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Answer 5

Chapter 2, Problem 1Q

Interpretation Introduction

Interpretation:

The reason for no crystallization of the sulfanilamide in the give experimental procedure needs to be explained.

Concept Introduction:

Crystallization is explained as a procedure by which formation of crystal or solid takes place by precipitating them from the solution. It takes place by either supercooling the solution liquid or by supersaturated solvent.

Expert Solution & Answer

Answer to Problem 1Q

Crystallization of sulfanilamide did not occur because of the proper ratio of solute and solvent is not taken in dissolving.

Explanation of Solution

Given Information:

10 mL volume of 95% ethyl alcohol is added to impure sulfanilamide of mass 0.10 g. After dissolving the solid, solution is cooled to room temperature and placed on ice-water bath for crystallization.

Sulfanilamide contains both polar sulfonamide,amine and non-polar benzene groups in its molecule, Thus, to solvate it properly, it requires a solvent of intermediate polarity. Solution of 95% ethyl alcohol contains 5% water (which is highly polar) so it is a good choice.The problem in the given experiment is not with the chosen solvent pair, but with the amount of the solvent used for dissolving the solute. At high temperatures, small quantity of solvent is to be taken for dissolving maximum quantity of solute for recrystallization, which then can be extracted when the solution is cooled, otherwise the solute would not be removed as crystals.

Answer 6

Chapter 2, Problem 1Q

Interpretation Introduction

Interpretation:

The reason for no crystallization of the sulfanilamide in the give experimental procedure needs to be explained.

Concept Introduction:

Crystallization is explained as a procedure by which formation of crystal or solid takes place by precipitating them from the solution. It takes place by either supercooling the solution liquid or by supersaturated solvent.

Expert Solution & Answer

Answer to Problem 1Q

Crystallization of sulfanilamide did not occur because of the proper ratio of solute and solvent is not taken in dissolving.

Explanation of Solution

Given Information:

10 mL volume of 95% ethyl alcohol is added to impure sulfanilamide of mass 0.10 g. After dissolving the solid, solution is cooled to room temperature and placed on ice-water bath for crystallization.

Sulfanilamide contains both polar sulfonamide,amine and non-polar benzene groups in its molecule, Thus, to solvate it properly, it requires a solvent of intermediate polarity. Solution of 95% ethyl alcohol contains 5% water (which is highly polar) so it is a good choice.The problem in the given experiment is not with the chosen solvent pair, but with the amount of the solvent used for dissolving the solute. At high temperatures, small quantity of solvent is to be taken for dissolving maximum quantity of solute for recrystallization, which then can be extracted when the solution is cooled, otherwise the solute would not be removed as crystals.

Answer 7

Chapter 2, Problem 1Q

Interpretation Introduction

Interpretation:

The reason for no crystallization of the sulfanilamide in the give experimental procedure needs to be explained.

Concept Introduction:

Crystallization is explained as a procedure by which formation of crystal or solid takes place by precipitating them from the solution. It takes place by either supercooling the solution liquid or by supersaturated solvent.

Answer 8

Expert Solution & Answer

Answer to Problem 1Q

Crystallization of sulfanilamide did not occur because of the proper ratio of solute and solvent is not taken in dissolving.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Explanation of Solution

Given Information:

10 mL volume of 95% ethyl alcohol is added to impure sulfanilamide of mass 0.10 g. After dissolving the solid, solution is cooled to room temperature and placed on ice-water bath for crystallization.

Sulfanilamide contains both polar sulfonamide,amine and non-polar benzene groups in its molecule, Thus, to solvate it properly, it requires a solvent of intermediate polarity. Solution of 95% ethyl alcohol contains 5% water (which is highly polar) so it is a good choice.The problem in the given experiment is not with the chosen solvent pair, but with the amount of the solvent used for dissolving the solute. At high temperatures, small quantity of solvent is to be taken for dissolving maximum quantity of solute for recrystallization, which then can be extracted when the solution is cooled, otherwise the solute would not be removed as crystals.

Answer 12

Ch. 2 - Prob. 1Q Ch. 2 - Prob. 2Q Ch. 2 - Prob. 3Q

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Answer to Problem 1Q

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