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Butyric Acid Is Responsible for the Odor in Rancid Butter

Question 71

Multiple Choice

Butyric acid is responsible for the odor in rancid butter.A solution of 0.25 M butyric acid has a pH of 2.71.What is the Ka for the acid?


A) 0.36
B) 2.4 × 10-2
C) 7.8 × 10-3
D) 1.5 × 10-5
E) 1.9 × 10-3

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