C12H22O11 (aq) + 6 KNO3 (aq) → 3 K2CO3 (aq) + 3 N2 (g) + 9 CO (g) + 11 H2O (l)
This is an oxidation-reduction (redox) reaction:
9 C0 - 18 e- → 9 CII (oxidation)
3 C0 - 12 e- → 3 CIV (oxidation)
6 NV + 30 e- → 6 N0 (reduction)
C12H22O11 is a reducing agent, C12H22O11 is a reducing agent, KNO3 is an oxidizing agent.
This is a gas evolution reaction, N2 and CO is the formed gas.