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Question

M is a metal above hydrogen in the activity series and its oxide has the formula M2O. This oxide when dissolved in water forms the corresponding hydroxide which is a good conductor of electricity. In the above context answer the following:
Name the product at the anode?

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Solution

We know that anode is attached to the positive terminal of the battery and the cathode is attached to the negative terminal of the battery. Hence, negative ions move towards the anode. Here O2 migrates to the anode and loses it 2 electrons to form neutral O atom. This O atom then combine to form O2 gas at the anode.

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