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Answer 1

Answer:

1 - Ortho and para nitrophenols are more acidic than phenol. ... O−,p− nitrophenol are more acidic than phenol because of fact that NO2 is best electron with drawing group. Electron with drawing groups increase acidic strength while electron donating groups decreases acidic strength.

2 - Reimer–Tiemann reaction. The Reimer–Tiemann reaction is a chemical reaction used for the ortho-formylation of phenols; with the simplest example being the conversion of phenol to salicylaldehyde. The reaction was discovered by Karl Reimer and Ferdinand Tiemann.

Named after: Karl Reimer; Ferdinand Tiemann