The Term "Proof" Is Defined as Twice the Percent by Volume

question 55

Multiple Choice

The term "proof" is defined as twice the percent by volume of pure ethanol in solution. A solution that is 95% ethanol is 190 proof. What is the molarity of ethanol in a 92-proof ethanol/water solution (Given: density of ethanol = 0.80 g/cm³; density of water = 1.0 g/cm³)

• A) 8.8 M
• B) 8.4 M
• C) 8.2 M
• D) 8.0 M
• E) None of the above