The mechanism of the nucleophilic substitution reaction for the conversion of 2-bromobutane to 2-butanol using sodium hydroxide NaOH as a nucleophile is an SN2 Substitution Nucleophilic Bimolecular reaction. Here's a step-by-step description of the mechanism:1. Formation of nucleophile: Sodium hydroxide NaOH dissociates into sodium cation Na+ and hydroxide anion OH- . The hydroxide anion acts as a nucleophile in this reaction.NaOH Na+ + OH-2. Nucleophilic attack: The hydroxide anion OH- attacks the electrophilic carbon atom C2 of 2-bromobutane from the backside, opposite to the leaving group Br- . This backside attack leads to the inversion of the stereochemistry at the carbon center.OH- + CH3CHBrCH2CH3 [CH3CHOHCH2CH3Br]-3. Departure of the leaving group: The bromide ion Br- leaves the transition state, and the bond between the carbon atom C2 and the bromine atom is broken.[CH3CHOHCH2CH3Br]- CH3CHOHCH2CH3 + Br-4. Formation of the product: The final product, 2-butanol, is formed along with the bromide ion.Overall reaction: CH3CHBrCH2CH3 + NaOH CH3CHOHCH2CH3 + NaBrIn summary, the mechanism of the nucleophilic substitution reaction for the conversion of 2-bromobutane to 2-butanol using sodium hydroxide as a nucleophile is an SN2 reaction involving the attack of the hydroxide anion on the electrophilic carbon, the departure of the bromide ion as a leaving group, and the formation of 2-butanol as the product.