Question

1. Use structure arguments to identify the strongest acid in this group: HBrO, HBrO, HBrO, HBrO. 2. Consider: HCIO, (aq) + H2O(0) Clo, (og) + H, 0' (og). Which added chemical would most suppress the ionization of the weak acid HCIO,? (Assume 0.5 M formal concentration for each added chemical.) Possible added chemicals: Nacio, Nacios, Mg(CIO), HCIO, NaOH - - -

Answer 1

O. Molecule HBrOq H Bro +1 Horo, +3 HBro, +5 1 + S +7 oxidation state of Br atom dt H de -Br - More is oxidation state of Br, more will be its electronegativity. More will be electronegativity, more will be attraction of electron cloud towards Br atom. This will make Ho Br bond very week. Hence, HBrOq is the strongest acid as Br (vii) is present in it. ②. Le Chateliers principle states that reaction nover in such direction to counteract the introduced change at equilibrium. Halo leq) + H₂O(l) clog (aq) + H₂ot (aq) Any chemical which moves the above reaction backward will suppress the ionization of нао. o. Naceea will have no effect o NaOH will nove reaction forwards. он: + H, от -1H, о o Nacho will nove reaction backward. . [ceoz ] = 0.5 M

E o Mg (202) will also nove reaction backward. [ctor, D = 2x0.5 M - IM o Helog reaction backwand. will also nove [root ] = o. sm Моя Ne clo, , Macedo). нао, , (мя (сло, ), will suppress . the Helog ionization the most because it increases the product concentration the highest: Higher the product concentration becomes more is the reaction will nove backwards to attain equilibrium again. Hence, Mg (ClO3)2 will be suppressing the highest of Helo, ionisation.