EBK A SMALL SCALE APPROACH TO ORGANIC L
EBK A SMALL SCALE APPROACH TO ORGANIC L
4th Edition
ISBN: 9781305446021
Author: Lampman
Publisher: CENGAGE LEARNING - CONSIGNMENT
bartleby

Videos

Question
Book Icon
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
Check Mark

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.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!
Students have asked these similar questions
The following reversible enzymatic reaction occurs in many areas of the body, but especially in red blood cells. The conversion of water and carbon dioxide into bicarbonate and hydrogen ions occurs through the action of an enzyme called carbonic anhydrase. Use the Law of Mass Action to predict which direction this equation will go under different circumstances. CO2 + H2O ↔  H+ + HCO3- Hyperventilating would increase the loss of carbon dioxide (CO2) from the blood. In what direction would the reaction above go in order to restore equilibrium? Left or right?
Predict will be observed in each experiment below. predicted observation (choose one) experiment Can A will make a louder and stronger fizz than can B. A student has two unopened 33 cL cans containing carbonated water. Can A has been stored in the garage (32 °C) and can B has been stored in the fridge (8 °C). The student opens one can at the time, both cans make a fizz. Can B will make a louder and stronger fizz than can A. The fizz will be the same for both cans. There is not enough information to predict which can will make the louder fizz.
2

Chapter 2 Solutions

EBK A SMALL SCALE APPROACH TO ORGANIC L

Knowledge Booster
Background pattern image
Chemistry
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
Similar questions
SEE MORE QUESTIONS
Recommended textbooks for you
Text book image
EBK A SMALL SCALE APPROACH TO ORGANIC L
Chemistry
ISBN:9781305446021
Author:Lampman
Publisher:CENGAGE LEARNING - CONSIGNMENT
Text book image
Chemistry for Engineering Students
Chemistry
ISBN:9781337398909
Author:Lawrence S. Brown, Tom Holme
Publisher:Cengage Learning
Text book image
Principles of Modern Chemistry
Chemistry
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:Cengage Learning
Text book image
Chemistry: The Molecular Science
Chemistry
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:Cengage Learning
Chemical Equilibria and Reaction Quotients; Author: Professor Dave Explains;https://www.youtube.com/watch?v=1GiZzCzmO5Q;License: Standard YouTube License, CC-BY