Which of the following chemical substances would you expect to have the highest boiling point (you may consider molecular mass and the degree of intermolecular hydrogen bonding as primary controlling factors)?

Question

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Ethyl alcohol, CH₃CH₂OH, is expected to have the highest boiling point because of its higher molecular mass and ability to form hydrogen bonds with surrounding molecules due to the presence of the hydroxyl (-OH) group. In comparison, while ammonia, NH₃, also has the ability to form hydrogen bonds, it has a lower molecular mass than ethyl alcohol. Methyl alcohol, CH₃OH, has a lower molecular mass than ethyl alcohol and can also form hydrogen bonds but to a lesser extent due to its smaller size. Methane, CH₄, is a nonpolar molecule and does not have the ability to form hydrogen bonds, making it have the lowest boiling point out of all the options.

Which of the Following Chemical Substances Would You Expect to Have