K2S2O8 (aq) + 2 KI (aq) → I2 (s) + 2 K2SO4 (aq)
This is an oxidation-reduction (redox) reaction:
2 SVII + 2 e- → 2 SVI (reduction)
2 I-I - 2 e- → 2 I0 (oxidation)
K2S2O8 is an oxidizing agent, KI is a reducing agent.
This is a precipitation reaction: I2 is the formed precipitate.
Reactants:
- K2S2O8
- KI
Products: