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 group 2 metal, M, is reacted with water so that M + 2H2O --> M(OH)2 + H2. 0.162g of metal produces 97.0cm3 of gas at RTP. Identify M.
What would the ideal conditions for the Haber process (nitrogen + hydrogen to ammonia) be? Why are the ideal conditions not used in industry?
A chemist mixes together 0.450 mol N2 with 0.450 mol H2 in a sealed container. The mixture is heated and allowed to reach equilibrium. At equilibrium, the mixture contains 0.400 mol N2 and the total pressure is 500 kPa. Calculate Kp.
State 2 features of a system that is in dynamic equilibrium.