Question

which is more stable cyclohexane or phenol

Answer 1

cychlo hexane is more stable

Answer 2

Acidity of Phenols - Chemistry LibreTexts Phenol is a very weak acid and the position of equilibrium lies well to the left. Phenol can lose a hydrogen ion
Organic Acids and Bases - Organic Chemistry Help! The conjugate base of cyclohexanol has no resonance structures to stabilize the charge and so is less stable. Electons on phenol are stabilized by their delocalization throughout the ring (shown below); cyclohexane has no electron delocalization, and thus is a much weaker acid.
ion formed is stabilised to some extent. The negative charge on the oxygen atom is delocalised around the ring. The more stable the ion is, the more likely it is to form.