Write reactions of the final alkylation product of aniline with excess of methyl iodide in the presence of sodium carbonate solution.

Explanation

Aniline reacts with methyl iodide to produce N, N-dimethylaninline.
With excess methyl iddide, in the presence of na 2Co3 solution,k N, N-dimethylaniline produces N,N, N-trimethylanilinium carbonate.
N, N-Dimethylaniline N,N,N-Trimethylaninlinium lodide N,N,N-Trimethyl lanilinium Carbonatte