GK
CHEMISTRY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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anode
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cathode
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Either A or B
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None of the above
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Detailed explanation-1: -Oxidation always takes place at the anode, regardless of the electrical cell type. The charges on the anode and cathode are reversed between galvanic and electrolytic cells. In electrolytic cells, the cathodes are marked negative and the anodes are marked positive.
Detailed explanation-2: -According to the mnemonic “Red Cat An Ox”, oxidation occurs at the anode and reduction occurs at the cathode. Since the reaction at the anode is the source of electrons for the current, the anode is the negative terminal for the galvanic cell.
Detailed explanation-3: -Electrolytic cells use an electric current to drive a thermodynamically unfavored redox reaction. As in galvanic cells, oxidation occurs at the anode and reduction occurs at the cathode.
Detailed explanation-4: -In electrochemistry, the anode is where oxidation occurs and is the positive polarity contact in an electrolytic cell. At the anode, anions (negative ions) are forced by the electrical potential to react chemically and give off electrons (oxidation) which then flow up and into the driving circuit.
Detailed explanation-5: -Oxidation occurs at the anode of a galvanic cell.