Table of Contents
Why is PH3 boiling point low?
Why is PH3 boiling point lower than NH3?
Why melting point of PH3 is less than AsH3?
AsH3 is a larger molecule than PH3 as As is lower down the periodic table, so has a higher atomic number so more electrons. Therefore AsH3 has more electrons than PH3 meaning that the instantaneous dipole produced by AsH3 is greater.
What has a higher boiling point NH3 or PH3?
1. Ammonia, NH3, has a much higher boiling point than phosphine, PH3. This is because: (A) NH3 has a lower molecular weight than PH3.
Why is the boiling point of PH3 lower than the boiling point of NH3?
1. Ammonia, NH3, has a much higher boiling point than phosphine, PH3. This is because: (A) NH3 has a lower molecular weight than PH3. NH3 can hydrogen bond, PH3 cannot.
Why is PH3 lower boiling point than AsH3?
AsH3 is a larger molecule than PH3 as As is lower down the periodic table, so has a higher atomic number so more electrons. Therefore AsH3 has more electrons than PH3 meaning that the instantaneous dipole produced by AsH3 is greater.
What causes a lower boiling point?
The vapor pressure of a liquid lowers the amount of pressure exerted on the liquid by the atmosphere . As a result, liquids with high vapor pressures have lower boiling points.
Why is boiling point of PH3?
Phosphine has dipole-dipole forces since it is a polar molecule. Because Hydrogen bonding is stronger, NH3 has stronger intermolecular forces and therefore a higher boiling point.
Why does PH3 have a lower boiling point than NH3 and AsH3?
Due to large size and lower electronegativity there is no H-bonding between PH3 molecules. So, they exist as discrete PH3 molecules. Consequently, boiling point of phosphine is less
Which has lowest boiling point NH3 PH3?
AsH3 is a larger molecule than PH3 as As is lower down the periodic table, so has a higher atomic number so more electrons. Therefore AsH3 has more electrons than PH3 meaning that the instantaneous dipole produced by AsH3 is greater.
Why does AsH3 have a higher melting point than PH3?
Arsenic, being farther down on the Periodic Table than Phosphorus, has more electrons that may group together and form instantaneous dipoles. We can say that AsH3 has a higher boiling point than PH3 because arsenic has a higher polarizability than phosphorus
Why melting point of PH3 is less than NH3?
In NH3, there is hydrogen bonding whereas in PH3 there is no hydrogen bonding. Therefore, the NH3 has higher boiling point than PH3.
Why is phosphine boiling point lower than arsine?
Explanation: Ammonia, boiling point u221233 u2218C , has demonstrably greater intermolecular bonding than that of phosphine, boiling point u221287.7 u2218C , or that of arsine, boiling point u221262.5 u2218C . The difference in intermolecular bonding may be attributed to the degree of hydrogen bonding in each solvent.
