[PuffySkirt]

What am I doing wrong? Shouldn't it be more stable for the Bromide ion to link with the tertiary carbon and to the water to link on the other side?

[kriggy]

Think Markovnikov´s rule, where does electrophile and nucleophile go? You have it in the text under... FIrst, there is ELECTROPHILIC attack by bromine forming bromonium ion which is then opened by nucleophile (ie. water)