Use the acid value formula Sample problem:  If a 2-gram sample of cod-liver oil required 4.5 mL of 0.02 N NaOH in the titration of the free fatty acids, would the oil conform with the official purity requirement? What would be the acid number of the oil?

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...
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Use the acid value formula
Sample problem: 
If a 2-gram sample of cod-liver oil required 4.5 mL of
0.02 N NaOH in the titration of the free fatty acids, would the
oil conform with the official purity requirement? What would
be the acid number of the oil?
 
 
Use Saponification value as your formula
Sample problem:
A sample of corn oil weighing 1.600 g saponified with 25
mL of 0.4 N KOH required 9.0 mL of 0.5 N HCl to titrate the
excess KOH. In the blank determination, 20 mL of 0.5 N HCl
was required to titrate the alkali. Calculate the saponification
value of the sample.
 
 
 
 
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