What is the mol fraction of ethanol,C₂H₅OH,in a solution of 75.3g of ethanol and 525g of water? A) 0.0531 B) 0.127 C) 0.947 D) 0.239 E) 0.0237

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Quizplus · Accepted Answer

The mol fraction of ethanol is 0.0531. This is because the mol fraction of a component in a solution is equal to the number of moles of that component divided by the total number of moles of all components in the solution. In this case, the number of moles of ethanol is 75.3g / 46.07 g/mol = 1.63 mol, and the number of moles of water is 525g / 18.02 g/mol = 29.1 mol. Therefore, the mol fraction of ethanol is 1.63 mol / (1.63 mol + 29.1 mol) = 0.0531.

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What Is the Mol Fraction of Ethanol,C₂H₅OH,in a Solution of 75.3g