which is more acidic

A)ortho nitro phenol

B)para nitro phenol

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.

AKASH GOYAL

AskiitiansExpert-IITD

Please feel free to post as many doubts on our discussion forum as you can. We are all IITians and here to help you in your IIT JEE preparation.

Win exciting gifts by answering the questions on Discussion Forum. So help discuss any query on askiitians forum and become an Elite Expert League askiitian.

Now you score 5+15 POINTS by uploading your Pic and Downloading the Askiitians Toolbar  respectively : Click here to download the toolbar..

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)...