On electrolysis, in which of the following, O2 would be liberated at the anode?

Dilute H 2 SO 4 with Pt electrodes , Dilute H 2 SO 4 with Cu electrodes , Aqueous AgNO 3 solution with Pt electrodes

At anode (+): 2 H 2 O → O 2 + 4 H + + 4 e − 1 In A,B,D options above reaction is possible.

Dilute H 2 SO 4 with Pt electrodes

Dilute H 2 SO 4 with Cu electrodes

Aqueous AgNO 3 solution with Pt electrodes

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On electrolysis, in which of the following, O₂ would be liberated at the anode?

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Dilute H₂SO₄ with Pt electrodes

Dilute H₂SO₄ with Cu electrodes

Aqueous NaOH with a Fe cathode and a Pt anode

Aqueous AgNO₃ solution with Pt electrodes

answer is A, B, D.

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At anode (+): $2 H_{2} O \to O_{2} + 4 H^{+} + 4 e^{- 1}$
In A,B,D options above reaction is possible.

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