Why is ethylamine a stronger base than phenylamine?
A base is a proton acceptor.
Amines work as bases due to the electronegativity of the nitrogen atom. The lone pair in the nitrogen atom is filled in a 2p(z) orbital, in phenylamine, the p orbital sufficiently overlaps with the p orbitals in the phenyl ring, thus causing the electron density to be spread over a larger area, or delocalised, thus reducing the basicity of the nitrogen atom.
On the other hand, in ethylamine, the nitrogen atom cannot overlap with any other atom and so the electron density is concentrated around the atom, or it's localised, thus increasing the basicity as it's able to attract protons more easily.
AM
Related Chemistry A Level answers
All answers ▸A) The compound butan-2-ol reacts with acidified potassium dichromate(VI) to form a new compound. Give the IUPAC name of the Product. B) 2,2-dimethyl butan-2-ol was subjected to the same conditions. State and explain the outcome
Deduce the main organic product for the reaction of benzene with nitric acid in the prescence of sulfuric acid, and provide a complete mechanism for this reaction. (5 marks)
State and explain the conditions for cis/trans isomerism and how this differs from E/Z isomerism.
Describe briefly the nature of metallic bonding and use this to explain why metals are malleable (can be hammered into shape) and conduct electricity