Question

Increasing order of acidity of phenol o nitrophenol o cresol

Answer 1

Answer: Due to -1 and - R-effect of the group, o-nitrophenol is a stronger acid than phenol but do to +I-effect of the group, o-cresol is a weaker acid than phenol. Thus, acid .strength of these three phenols increases in the order : o-cresol < phenol < o-nitrophenol