Question

explain the acidity order of o in and p in chlorophenol​

Answer 1

The thing you have to realise is that H-bonding can lower the ease with which the acidic H is removed, but it does not render it completely 'locked' within the molecule. What you have to understand is, the hydrogen bond shown here is not that strong as compared to the other kinds of H-bonds which have been observed in chemistry

Hydrogen bonds can vary in strength from weak (1−2 kJmol−1) to strong (161.5 kJmol−1 in the ion HF2−. Typical enthalpies in vapor include:

F−H⋅⋅⋅:F (161.5 kJ/mol or 38.6 kcal/mol), illustrated uniquely by HF2−, bifluoride

O−H⋅⋅⋅:N (29 kJ/mol or 6.9 kcal/mol), illustrated water-ammonia

O−H⋅⋅⋅:O (21 kJ/mol or 5.0 kcal/mol), illustrated water-water, alcohol-alcohol

N−H⋅⋅⋅:N (13 kJ/mol or 3.1 kcal/mol), illustrated by ammonia-ammonia

N−H⋅⋅⋅:O (8 kJ/mol or 1.9 kcal/mol), illustrated water-amide

HO−H⋅⋅⋅:OH+3 (18 kJ/mol or 4.3 kcal/mol)