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

question 2

Multiple Choice

The term "proof" is defined as twice the percent by volume of pure ethanol in solution.Thus,a solution that is 95% (by volume) ethanol is 190 proof.What is the molarity of ethanol in a 92 proof ethanol/water solution? density of ethanol
= 0.80 g/cm³
Density of water
= 1.0 g/cm³
Mol.wt.of ethanol
= 46 g/mol

• A)0.46 M
• B)0.80 M
• C)0.92 M
• D)8.0 M
• E)17 M

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