The mole fraction of HCl in a solution prepared by dissolving 5.5 g of HCl in 200 g of C₂H₆O is ________. The density of the solution is 0.79 g/mL. A)0.027 B)0.034 C)0.028 D)0.035 E)0.151

Question

Quizplus · Accepted Answer

To find the mole fraction, first calculate the moles of HCl and C2H6O. Moles of HCl = 5.5 g / 36.46 g/mol = 0.151 moles. Moles of C2H6O = 200 g / 46.07 g/mol = 4.34 moles. Mole fraction of HCl = 0.151 / (0.151 + 4.34) = 0.034.

The Mole Fraction of HCl in a Solution Prepared by Dissolving