C4 supplement

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8 Terms

1
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State the half equation at the anode for hydroxide

4OH- —> O2 + 2H2O + 4e-

2
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What does oxidized mean in terms of electrons?

Loss of electron

3
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What does reduced mean in terms of electrons?

Gain of electron

4
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In a concentrated aqueous halide solution, what forms at the anode?

Forms halogen

5
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In a dilute aqueous halide solution, what forms at the anode?

oxygen

6
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How are metals electroplated?

The metal which is being electroplated must be the cathode

The metal which its metal is stripped away from is the anode

7
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In electroplating, what is the role of the ions

They strip the charges from the anode and carry it towards the cathode

8
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In electroplating, what is the movement of charges?

anode —> cathode