Which species has greater reduction potential?
Correct answer: D. Aluminum ion
- A. Barium ion
- B. Calcium ion
- C. Magnesium ion
- D. Aluminum ion
Explanation
As we go down the electrochemical series , the reduction potential increases. (becomes less negative , approaches zero and then becomes positive). In an electrochemical series , Al3+ -> Al has E⁰ = -1.67V. It is less negative compared to others. (Note: Barium occurs after Li+ and prior to Mg²±)
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Electrochemistry describes electron transfer through oxidation and reduction, identifies oxidizing and reducing agents, and applies oxidation numbers to balance redox equations. It also covers electrode potential and the standard hydrogen electrode, which provides the reference for comparing the reduction tendencies of other electrodes.
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