Question

which is more acidic ortho,para or meta nitrophenol and why?

Answer 1

HEY HERE IS UA ANSWER. ............................
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So, meta nitrophenol is the weakest in terms of acidity. Now, in ortho nitrophenol, intramolecular hydrogen bonding between the adjacent hydroxyl and nitro groups significantly affects release of the proton. So, it is a weakeracid compared to para nitrophenol.

That's why cresols are less acidic than phenol. One can further realize that the metacompound is more acidic, and this is due to the resonance structures which show a negative charge in ortho and para, but not inmeta.

Answer 2

Answer:

P-nitrophenol is more acidic. Because it has less steric hinderence.