Asked by MMPM
The boiling point of phosphine, PH3(-88C) is lower than that of ammonia, NH3(-33C) even though phosphine has twice th molar mass of NH3. Why?
Answers
Answered by
DrBob222
Because of hydrogen bonding in NH3. Hydrogen bonding occurs in molecules containing N, O, and F atoms with associated H atoms. (N has EN of 3.0, P is about 2.0, F is 4.0 and O is 3.5.)
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