Answer
a) Bromic Acid.
b) Iodic Acid.
Work Step by Step
The bromate ion forms bromic acid since all polyatomic ions with "ate" suffixes form "ic" acids. So the ending is replaced with "ic" and the word "acid" is added on the end to become Bromic Acid.
Likewise, Tte iodate ion forms iodic acid since all polyatomic ions with "ate" suffixes form "ic" acids. So the ending is replaced with "ic" and the word "acid" is added on the end to become Iodic Acid.