NEET2003ChemistryGeneral Organic ChemistryActual
Which one of the following orders of acid strength is correct?
Options
- ARCOOH > ROH > HOH > HC HC
- BRCOOH > HOH > ROH > HC CH
- CRCOOH > HOH > HC CH > ROH
- DRCOOH > HC CH > HOH > ROH
Correct answer
B. RCOOH > HOH > ROH > HC CH
Step-by-step solution
Carboxylic acids are most acidic and alcohols are least acidic. Phenols are more acidic than alcohols but less acidic than carboxylic acids or carbonic acid. Thus, acidic strength order is ( R - || O C - OH > H - O - H > R - O - H > H - C C - H ) Related Theory Acid strength increases with : 1. increasing electronegativity of the central atom: The more electronegative the central atom, the more electron drift occurs, polarizing the O - H bond which makes it easier for the molecule to dissociate. 2. increasing oxida