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NH3 exhibits hydrogen bonding in addition to dispersion forces. This significantly increases the intermolecular force, and raises the boiling point. PH3 does not exhibit hydrogen bonding and the dominant intermolecular force holding these molecules together is dispersion forces. (Dispersion forces also known as Van Der Waal Force)

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9y ago
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11y ago

NH3 exhibits hydrogen bonding in addition to dispersion forces. This significantly increases the intermolecular force, and raises the boiling point. PH3 does not exhibit hydrogen bonding and the dominant intermolecular force holding these molecules together is dispersion forces. (Dispersion forces also known as Van Der Waal Force)

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This phenomenon is generally ascribed to the much stronger hydrogen bonding between molecules that occurs at equilibrium in liquid ammonia. The hydrogen bonding is strong enough that the effective kinetic molecular unit in liquid ammonia has a higher mass than the effective kinetic molecular unit in liquid phosphine, even though the mass of a single molecule of phosphine is greater than the mass of a single molecule of ammonia.

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Q: WHY ammonia has higher boiling point then phosphine?
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Which substance has higher boiling point nitrogen fluoride or NH3?

Boiling point of NH3: -33,34 0C Boiling point of NF3: -129,1 0C The boiling point of ammonia is higher.


Does ammonia have a higher boiling point than methane?

Yes, Boiling point of ammonia, NH3: - 33,34 0C Boiling poit of methane, CH4: - 161,6 0C


Why do ammonia has higher boiling point than methane in terms of intermolecular forces?

it doesn't


What is the boiling point of ammonium?

The boiling point of ammonia at atmospheric pressure is -33.34oC.


What is the meaning of melting point of ammonia and boiling point of ammonia?

The meaning is at what temperature does ammonia melt at and what temperature does ammonia boil at? for eg. waters melting point is 0 degrees celcius and the boiling point of water is 100 degrees celsius


Which compound has a higher boiling point NF3 or NH3?

Ammonia: -33,34 0C Nitrogen trifluoride: -129 0C


What are the melting point and boiling point of Ammonium?

If you mean ammonia, the melting point of ammonia is −77.73 °C, and its boiling point is −33.34 °C. (Wikipedia)


Which boiling point is higher PH3 or AsH3?

nitrogen is more electronegative than the other elements, so there is a molecular dipole towards the nitrogen. NH3 is the most polar of the three.


Why does ammonia have a high boiling point?

Hydrogen bonding


Does chlorine or oxygen has higher boiling point?

Chlorine has higher boiling point.


How does pressure affect boiling point?

The boiling point is that temperature when the SATURATEDvapor pressure of a liquidbecomes equal tothe surrounding pressure.Thus the higher the sorrounding pressure, the higher the boiling point.


How does salt effect boiling point?

The boiling point is higher.