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This is because of the electronegitivity and size difference in the elements N and P. N has a higher electronegitivity and pulls the electrons in the N-H bonds toward itself, creating a more polar bond than the P-H bond. N is smaller than P thus it is a better lewis base, being able to form more stable sigma bonds. Both of these things cause NH3 to more readily take up a proton from solution.
Wiki User
∙ 12y ago
Wiki User
∙ 6y agoPhosphorus is less electronegative than nitrogen, which makes it easier for phosphine to share its lone electron pair with a hydrogen ion.
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Why phosphine is a stronger reducing agent than ammonia?
phosphine ignites in air at 150 degree to form phosphoric acid
Why is ammonia a stronger base than phosphine?
The lone pair of electron of nitrogen in ammonia is easily available for attack of an acid due to absence of 'd' orbital but in phosphorus vacant '3d' orbitals are available so electron pair of phosphorus may shift in '3d' orbitals and not easily available as pair for attack of an acid so phosphine is a weaker base.
What pH is ammonia?
Ammonia is a substance that when dissolved causes a solution to be basic (pH higher than 7) however without knowing the concentration of the ammonia in solution, it is impossible to determine the pH.
Is ammonia more dense or less dense than air?
Yes ammonia is less dense than air
Why benzyl amine is more basic than n-ethyl aniline?
Because in Benzylamine : the unshared lone pair of electron on nitrogen atom isavailable >.. But in n-ethyl aniline: the unshared lone pair of electron is not available and enter resonance with benzene ring .(Villa)
Why phosphine is a stronger reducing agent than ammonia?
phosphine ignites in air at 150 degree to form phosphoric acid
Why hydrazine more basic than ammonia?
It is not, ammonia is more basic (pkb=5) than hydrazine (pkb=6)
Why is ammonia a stronger base than phosphine?
The lone pair of electron of nitrogen in ammonia is easily available for attack of an acid due to absence of 'd' orbital but in phosphorus vacant '3d' orbitals are available so electron pair of phosphorus may shift in '3d' orbitals and not easily available as pair for attack of an acid so phosphine is a weaker base.
Why is phosphine non polar?
The shape is trigonal pyramidal Polarity is non-polar
Why is ammonia more soluble in water than phosphine?
This is because in ammonia there is a nitrogen atom (with a high electronegativity value) that has a lone pair of electronsavailable to form a hydrogen bond with the hydrogen atoms in water. On the other hand although the Phosphorous atom has a lone pair of electrons, it doesn't have a high enough electronegativity value to form a strong hydrogen bond.
Is ammonia mlecule NH3 more polar than water molecule?
no, water is more polar than ammonia.
What pH is ammonia?
Ammonia is a substance that when dissolved causes a solution to be basic (pH higher than 7) however without knowing the concentration of the ammonia in solution, it is impossible to determine the pH.
Why methyl amine is a stronger base than ammonia?
Because methyl is an electron pumping group and It pumps electrons to Amine group to make it basic, But Ammonia has no influence from any basic groups. Therefore compared to Methyl-Amine, Ammonia is less basic
Is ammonia more dense or less dense than air?
Yes ammonia is less dense than air
Why benzyl amine is more basic than n-ethyl aniline?
Because in Benzylamine : the unshared lone pair of electron on nitrogen atom isavailable >.. But in n-ethyl aniline: the unshared lone pair of electron is not available and enter resonance with benzene ring .(Villa)
Is uric acid more toxic than ammonia?
no
Why are amines more basic than ammonia?
Ammonia acts as a Brønsted-Lowry base as it can accept a proton to form an positive ammonium ion. Amines act in a similar manner, but the hydrocarbon segment lends a larger molecule to help distribute the positive charge, leading to a more stable cation.
