A 2.25 g sample of butter was refluxed with ethanolic KOH and required 18.6 mL of 0.1978 M HCl to reach the phenolphthalein endpoint. If the blank determination 47.1 mL of the same standard acid, a. Calculate the saponification value of the sample b. Assuming that the sample comprised mainly of fat, what is its molar mass?

A 2.25 g sample of butter was refluxed with ethanolic KOH and required 18.6 mL of 0.1978 M HCl to reach the phenolphthalein endpoint. If the blank determination 47.1 mL of the same standard acid, a. Calculate the saponification value of the sample b. Assuming that the sample comprised mainly of fat, what is its molar mass?

Chemistry

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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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Arrhenius Acid

Arrhenius acid act as a good electrolyte as it dissociates to its respective ions in the aqueous solutions. Keeping it similar to the general acid properties, Arrhenius acid also neutralizes bases and turns litmus paper into red.

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Bronsted-Lowry base in inorganic chemistry is any chemical substance that can accept a proton from the other chemical substance it is reacting with.

Question

A 2.25 g sample of butter was refluxed
with ethanolic KOH and required 18.6
mL of 0.1978 M HCl to reach the
phenolphthalein endpoint. If the blank
determination 47.1 mL of the same
standard acid, a. Calculate the
saponification value of the sample b.
Assuming that the sample comprised
mainly of fat, what is its molar mass?

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