Which among the following is strongest base in gas phase? (a) Triethylamine (b) Diethylamine (c) Ethylamine (d) Ammonia

By Ritesh|Updated : October 31st, 2022

Triethylamine is the strongest base in the gas phase. Alkanamine's alkyl group R- releases electrons by pushing them toward nitrogen, which increases the availability of the unshared electron pair for sharing with the proton of the acid.

Strongest Base in Gas Phase

  • Furthermore, the +I action of the alkyl group disperses the positive charge, stabilizing the substituted ammonium ion generated from the amine.
  • Alkylamines are therefore more powerful bases than ammonia.
  • As a result, an increase in the number of alkyl groups should result in an increase in the basic character of aliphatic amines.
  • In the gaseous phase, this pattern is followed.
  • Bases are described as organisms that readily donate electrons or lone pairs in a reaction; the easier it is to donate electrons or lone pairs, the more basic the property.
  • Based on periodic table trends, the basic character gets smaller as you move down the group. Thus, the most fundamental hydride among the group 16 (chalcogens) hydrides.

The amines in the gaseous phase are basic in the anticipated order: secondary amine, primary amine, tertiary amine, and NH3

Triethylamine

Basicity Order,

⇒ 3° > 2° > 1° > NH3

Stability of basic order ∝ Doner group.

∴ The correct option is Triethylamine.

Summary:

Which among the following is strongest base in gas phase? (a) Triethylamine (b) Diethylamine (c) Ethylamine (d) Ammonia

The strongest base in the gas phase is triethylamine. The alkyl group R- of alkanamine releases electrons by pushing them toward nitrogen, which enhances the availability of the free electron pair for sharing with the acid proton.

Comments

write a comment

CDS & Defence Exams

CDSCAPFAFCATTA ExamACC ExamOther ExamsPracticePreparation

Follow us for latest updates