1.

Which of the following reactions is not redox?

A. 2KCIO3 → 2KCI + 3O2
B. 2KBr + CI2 → 2 KCI + Br2
C. BaCI2 + Na2SO4→ BaSO4 + 2NaCl
D. I2 + 2S2O3-2 → 2I- +S4O6-2
Answer» D. I2 + 2S2O3-2 → 2I- +S4O6-2


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