The following acids have been arranged in the order of decreasing acid strength. Identify the correct order. `HClO(I), HClO_(2)(II), HClO_(3) (III), H
The following acids have been arranged in the order of decreasing acid strength. Identify the correct order.
`HClO(I), HClO_(2)(II), HClO_(3) (III), HClO_(4)(IV)`
A. `I gt II gt III`
B. `II gt I gt III`
C. `III gt II gt I`
D. `I gt III gt II`
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Correct Answer - A
Among the oxyacids of different halogen with the same oxidation state, the acidic character decreases with the increase in atomic number. It is because the greater the size of halogen atom, the lesser will be its electronegativity and hence, lesser will be the acidic strength of its oxo acid. Consequently, acidic strength of the above oxo acids decreases i the order `HCIO gt HBrO gt HIO.`
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