Question

The vapor pressure of pure water at 55 °C is 118 mm Hg. What is the equilibrium vapor pressure of water above a mixture of 77.0 g ethanol (CH₃CH₂OH, molar mass = 46.07 g/mol) and 32.0 g water?

49.0 mm Hg

34.6 mm Hg

57.2 mm Hg

2.72 mm Hg

60.8 mm Hg

Answer 1