Determine the molar concentration of ethanol (C₂H₆O) in a wine that is 14% ethanol by mass. The density of this wine is 0.93 g/cm³. A)0.063 M B)13.0 M C)0.14 M D)2.8 M E)3.0 M

Question

Quizplus · Accepted Answer

To find the molar concentration, first calculate the mass of ethanol in 1 liter of wine. Since the wine is 14% ethanol by mass, in 1000 g of wine, there are 140 g of ethanol. The density of the wine is 0.93 g/cm³, so 1 liter (1000 cm³) of wine has a mass of 930 g. Therefore, the mass of ethanol in 1 liter of wine is (930 g * 0.14) = 130.2 g. The molar mass of ethanol (C₂H₆O) is approximately 46.08 g/mol. Thus, the molar concentration is 130.2 g / 46.08 g/mol = 2.8 M.

Determine the Molar Concentration of Ethanol (C2H6O) in a Wine

Determine the Molar Concentration of Ethanol (C₂H₆O) in a Wine