Arrange the acids
(i) H2SO3
(ii) H3PO3 and
(iii) HClO3 in the decreasing order of acidity.
(a) (i) > (iii) > (ii)
(b) (i) > (ii) > (iii)
(c) (ii) > (iii) > (I)
(d) (iii) > (i)> (ii)
Acidity is directly proportional to oxidation number. As the oxidation number of *, P and Cl in H2SO3 , H3PO3 and HCIO3 is +4, +3, +5 respectively. So decreasing order of acidity will be (iii) > (I) > (ii)
