1- Methyl orange is made by diazotizing the sodium salt of sulfanilic acid (p-aminobenzenesulfonic acid) followed by coupling with N,N-dimethyl aniline. Write equations for these reactions,giving the structure of methyl orange.
2-Explain how would you distinguish between NN-dimethylaniline and 2,4 dimethylaniline by chemical means. What would you do and what would you see?
3- Would methyl red be a suitable indicator for the titration of a typical carboxylic acid,RCO2H,with standard 0.1000 M aq. NaOH?