Question: why hclo3 is stronger than hclo2?
Answer: HClO3 has less oxygens and, therefore, pulls less electrons from the O-H bond. Originally Answered: Why is HClO3 a stronger acid than HClO2? The more electron-drawing the group that bonds to OH group is, the more polar O-H bond is, which makes it easier to electrolyse, which mean it is more acidic.