Complex sentence: However, it becomes a better leaving group after protonation, which converts the leaving group from OH-to H 2 O. H 2 O is a weaker base than OH-and can thus undergo substitution reactions with weakly basic nucleophiles.
Split into simpler sentences: However, it becomes a better leaving group after protonation, which converts the leaving group from OH-to H2O. H2O is a weaker base than OH-and can thus undergo substitution reactions with weakly basic nucleophiles.