Each of the following substances is a liquid at -50°C.Place these liquids in order of increasing vapor pressure: dimethyl ether (CH₃OCH₃), propane (C₃H₈), and ethanol (CH₃CH₂OH)_. A)ethanol

Question

Each of the following substances is a liquid at -50°C.Place these liquids in order of increasing vapor pressure: dimethyl ether (CH₃OCH₃), propane (C₃H₈), and ethanol (CH₃CH₂OH)_. A)ethanol < propane < dimethyl ether B)ethanol < dimethyl ether < propane C)propane < dimethyl ether < ethanol D)dimethyl ether < ethanol < propane E)propane < ethanol < dimethyl ether

Quizplus · Accepted Answer

Ethanol has hydrogen bonding, leading to the lowest vapor pressure. Dimethyl ether has dipole-dipole interactions, resulting in a moderate vapor pressure. Propane, with only London dispersion forces, has the highest vapor pressure.

Each of the Following Substances Is a Liquid at -50°C