Liquid Ammonia (anhydrous NH3(l)) Is Often Used As A Solvent. Like Water, Ammonia Undergoes Autoionization By The Transfer Of A Proton: 2NH3 NH4+ + NH2- K = 1×10-33 At -50°C Since Ammonia Is Better Proton Acceptor Than Water, The Ionization Of Acids Is Relatively Enhanced In Liquid Ammonia. For Example, Acetic Acid Is A Strong Acid In Liquid Ammonia. A) Estimate [NH4+] (mol/L) In Pure (i.e. Neutral) Liquid Ammonia At -50°C. B) Calculate [NH4+] (mol/L) In A 6.29×10-2 M Solution Of Acetic Acid In Liquid Ammonia At -50°C. C) Estimate [NH2-] (mol/L) In A 6.29×10-2 M Solution Of Acetic Acid In Liquid Ammonia At -50°C.

Liquid ammonia (anhydrous NH3(l)) is often used as a solvent. Like water, ammonia undergoes autoionization by the transfer of a proton: 2NH3 NH4+ + NH2- K = 1×10-33 at -50°C Since ammonia is better proton acceptor than water, the ionization of acids is relatively enhanced in liquid ammonia. For example, acetic acid is a strong acid in liquid ammonia. a) Estimate [NH4+] (mol/L) in pure (i.e. neutral) liquid ammonia at -50°C. b) Calculate [NH4+] (mol/L) in a 6.29×10-2 M solution of acetic acid in liquid ammonia at -50°C. c) Estimate [NH2-] (mol/L) in a 6.29×10-2 M solution of acetic acid in liquid ammonia at -50°C.

- October 5, 2022 - Edwin Tunner

Liquid ammonia (anhydrous NH₃(l)) is often used as a solvent. Like water, ammonia undergoes autoionization by the transfer of a proton:

2NH₃ NH₄⁺ + NH₂^– K = 1×10^-33 at -50°C

Since ammonia is better proton acceptor than water, the ionization of acids is relatively enhanced in liquid ammonia. For example, acetic acid is a strong acid in liquid ammonia.

a) Estimate [NH₄⁺] (mol/L) in pure (i.e. neutral) liquid ammonia at -50°C.

b) Calculate [NH₄⁺] (mol/L) in a 6.29×10^-2 M solution of acetic acid in liquid ammonia at -50°C.

c) Estimate [NH₂^–] (mol/L) in a 6.29×10^-2 M solution of acetic acid in liquid ammonia at -50°C.

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