False
Explanation:
H-I is stronger acid than H - Br, because the electronegativity of Br is higher than I. So, the difference of electronegativity of H-Br is greater than H-I and due to this reason ionic character of HBr is greater than HI. So the rate of donation of proton is higher in HI than H-Br (H-I and HBr do not exhibit H-bonding)
Acidic strength ∝ Rate of donation of proton.
