question_answer

Phenol is more acidic than alcohol because

A)  phenol is more soluble in polar solvents

B)  alcohol does not lose hydrogen atom

C)  phenoxide ion is stabilised by resonance

D)  phenoxide ion do not exhibit resonance

Correct Answer: C

Solution :

Key Idea: Here is resonance. Due to resonance the phenoxide ion is more stable whereas resonance is not possible in alkoxide ion.                                 \[R-{{O}^{O-}}\] no resonance is possible, Since, phenoxide ion is better stabilised by resonance, the phenol has more tendency to form phenoxide ion by releasing \[{{H}^{+}}\]ion. So, phenols are acidic in nature.