The term "proof," still used to describe the ethanol content of alcoholic beverages, originated in 17th century England. A sample of whiskey was poured on gunpowder and set afire. If the gunpowder ignited after the whiskey had burned off, this "proved" that the whiskey had not been watered down. The minimum ethanol concentration for a positive test was about 50%, by volume. The 50% ethanol solution became known as "100 proof." Thus, an 80-proof whiskey would be 40% C2H5OH by volume. Listed in the table are some data for several aqueous solutions of ethanol. With a minimum amount of calculation, determine which of the solutions are more than 100 proof. Assume that the density of pure ethanol is 0.79 g/mL. Molarity of ethanol (M) Density of solution (g/mL)

The term "proof," still used to describe the ethanol content of alcoholic beverages, originated in 17th century England. A sample of whiskey was poured on gunpowder and set afire. If the gunpowder ignited after the whiskey had burned off, this "proved" that the whiskey had not been watered down. The minimum ethanol concentration for a positive test was about 50%, by volume. The 50% ethanol solution became known as "100 proof." Thus, an 80-proof whiskey would be 40% C2H5OH by volume. Listed in the table are some data for several aqueous solutions of ethanol. With a minimum amount of calculation, determine which of the solutions are more than 100 proof. Assume that the density of pure ethanol is 0.79 g/mL. Molarity of ethanol (M) Density of solution (g/mL)

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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