Question

what is the half reactions for
C12H22O11+ 8KClO2 => 12CO2 + 11H2O + 8KCl

Answer 1

I would venture a guess that this could be represented as two reactions occurring simultaneously. I wonder if that is KClO2 or did you make a typo and you meant it to be KClO3.
ClO2^- ==> Cl^- + O2 (not balanced)
Cl³⁺ ==> Cl^-
O⁼ ==> O2

Then
C12H22O11 + O2 ==> CO2 + H2O (not balanced)
C^o ==> C⁴⁺
O2 ==> O⁼