2Н2О → 2Н2 ↑ + О2 ↑ – indicate the oxidizing agent and the reducing agent.

H2O (water) is both a reducing and oxidizing agent
H2O (O with oxidation state -2) – reducing agent
H2O (H with oxidation state +1) – oxidizing agent
O from O (-2) – to O (0)
H from H (+1) to H (0)



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