The production of carbocation occurs during aqueous KOH hydrolysis. If the carbocation is stable, aqueous KOH can easily hydrolyze the compound. Now, C₆H₅ CH₂Cl  creates 1o– carbohydrate, whereas C₆H₅CH₂ClC₆H₅ forms 2o–carbohydrate, which is more stable than 1o– carbohydrate. As a result, aqueous KOH hydrolyzes C6H5CHClC6H5 more easily than C₆H₅ CH₂Cl .