choose mutiple answers

Chemistry
10th Edition
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...
icon
Related questions
Question

choose mutiple answers 

Why is methanol chosen as the solvent for recrystallization?
(Check all that apply.)
Because the product and the impurities dissolve well at the
boiling point of the solvent.
Because it can easily be boiled off.
Because the reactants dissolves less than the product in
methanol at low temperatures.
Because the product dissolves less than the reactants in
methanol at low temperatures.
Because it has a low boiling point
Transcribed Image Text:Why is methanol chosen as the solvent for recrystallization? (Check all that apply.) Because the product and the impurities dissolve well at the boiling point of the solvent. Because it can easily be boiled off. Because the reactants dissolves less than the product in methanol at low temperatures. Because the product dissolves less than the reactants in methanol at low temperatures. Because it has a low boiling point
Why are ice and water added to the reaction mixture after
the reaction was completed? (Check all that apply.)
To protonate the intermediate to form the product
To increase the volume of the solution.
To cause the organic compounds to precipitate.
To dilute the solution before filtration to avoid that the filter
paper to dissolve
To deprotonate the intermediate to form the product
Transcribed Image Text:Why are ice and water added to the reaction mixture after the reaction was completed? (Check all that apply.) To protonate the intermediate to form the product To increase the volume of the solution. To cause the organic compounds to precipitate. To dilute the solution before filtration to avoid that the filter paper to dissolve To deprotonate the intermediate to form the product
Expert Solution
Step 1

Chemistry homework question answer, step 1, image 1

Answer:

  • Methanol is a low boiling solvent. Polar impurities soluble readily.
  • Because of product soluble less than reactant (impurity). we remove impurities easily.  
steps

Step by step

Solved in 2 steps with 2 images

Blurred answer
Similar questions
  • SEE MORE QUESTIONS
Recommended textbooks for you
Chemistry
Chemistry
Chemistry
ISBN:
9781305957404
Author:
Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:
Cengage Learning
Chemistry
Chemistry
Chemistry
ISBN:
9781259911156
Author:
Raymond Chang Dr., Jason Overby Professor
Publisher:
McGraw-Hill Education
Principles of Instrumental Analysis
Principles of Instrumental Analysis
Chemistry
ISBN:
9781305577213
Author:
Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:
Cengage Learning
Organic Chemistry
Organic Chemistry
Chemistry
ISBN:
9780078021558
Author:
Janice Gorzynski Smith Dr.
Publisher:
McGraw-Hill Education
Chemistry: Principles and Reactions
Chemistry: Principles and Reactions
Chemistry
ISBN:
9781305079373
Author:
William L. Masterton, Cecile N. Hurley
Publisher:
Cengage Learning
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemistry
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY