AP EAMCET202021 Sep 2020Evening ShiftChemistryGeneral Organic ChemistryActual
The correct order of increasing acidic strength among the following is
Options
- Aphenol < ethanol < chloroacetic acid < acetic acid
- Bethanol < phenol < chloroacetic acid < acetic acid
- Cethanol < phenol < acetic acid < chloroacetic acid
- Dchloroacetic acid < acetic acid < phenol ( < ) ethanol
Correct answer
C. ethanol < phenol < acetic acid < chloroacetic acid
Step-by-step solution
The correct order of increasing acidic strength is : ethanol ( < ) phenol ( < ) acetic acid ( < ) chloroacetic acid Phenol is more acidic than ethanol because in phenol, the phenoxide ion obtained on deprotonation is stabilised by resonance, which is not possible in case on ethanol. Also carboxylic acids are more acidic than alcohols and phenols as the carboxylate ion is stabilised by resonance. Chloroacetic acid is more acidic than acetic acid due to inductive effect of chlorine atom which stabilises the carboxyla