which is more acidic A)ortho nitro phenol B)para nitro phenol

which is more acidic 

A)ortho nitro phenol

B)para nitro phenol


2 Answers

AKASH GOYAL AskiitiansExpert-IITD
420 Points
12 years ago

Dear paresh

Because in the ortho-isomer the proton on the -OH group can hydrogen-bond with one of the oxygen atoms of the -NO2 group, making it harder to lose the proton.
With the para-isomer this can't happen

hence para nitro phenol is more acidic

All the best.




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vikas askiitian expert
509 Points
12 years ago

para nitro phenol is  more acidic because in orthonitro phenol there is intramolecular

hydrogen bonding present due to which is not capable of loosing its proton(H)...

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