The vapor pressure of pure water at 55°C is 118 mm Hg. The vapor pressure of ethanol at 55°C is 144 mm Hg. What is the total vapor pressure above a mixture of 92.0 g of ethanol (CH3CH2OH, molar mass = 46.0 g/mol) and 186 g of water?

Calculate the standard enthalpy of formation of liquid methanol, ch3oh(l), using the following information: c(graphite) + o2 latex: \longrightarrow ⟶ co2(g) latex: \delta δ h° = –393.5 kj/mol h2(g) + o2 latex: \longrightarrow ⟶ h2o(l) latex: \delta δ h° = –285.8 kj/mol ch3oh(l) + o2(g) latex: \longrightarrow ⟶ co2(g) + 2h2o(l) latex: \delta δ h° = –726.4 kj/mol