Saw this in a multiple choice and didn't really get it.
"One optically active isomer of 2-chlorobutane reacts with hydroxide ions to form butan-2-ol. The organic product is mixture of enantiomers because:
A) Butan-2-ol contains a chiral carbon atom.
B) The reaction is a nucleophilic substitution.
C) 2-chlorobutane forms a carbocation intermediate.
D) 2-chlorobutane forms a five-bonded transition state."
Now I don't get it because obviously it's a primary halogenoalkane and those undergo SN2 reactions which only give one optical isomer of the alchohol. So how come there's a mixture here and how come the answer's C?
From GCSE to A level, it's all changing