Question

acidic strength of oxyacids of same type formed by different elements depends on oxydation number. how this statement is wrong???

Answer 1

Generally, a compound of any element with higher oxidation state is more acidic than the compound of that element with lower oxidation state, viz., Fe3+ salts are more acidic than Fe2+, on the same line we may say that; oxide in the higher oxidation state of the element is more acidic than of a lower oxidation state. This is because, as the oxidation state increase the carge density of that atom also increases, consequently such atom strongly pulls the electron density towards itself from other specie that comes closer or in contact with it!