222. How will you convert:
Propaonic acid into ethanoic acid?

Write short notes on the following:
Carbylamine reaction.

Write short notes on the following:
Diazotization.

Write short notes on the following:
Hoffmann’s bromamide reaction

Write short notes on the following:
Coupling reaction

Write short notes on the following:
Ammonolysis

Write short notes on the following:
Acetylation 

Write short notes on the following:
Gabriel phthalimide synthesis

Accomplish the following conversions:
Nitrobenzene to benzoic acid