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The standard reduction potential of Al (Al 3+ + 3e - = Al) is -1.66. It is the reduction potential of Al (Al 3+ /Al) that is -1.66, but when Al is acting as anode and getting oxidised to Al 3+ , the E cell of Al/Al 3+ cell is given to be -1.66. How is it possible to have the samve value of -1.66 for both oxidation and reduction?

The standard reduction potential of Al (Al3+ + 3e- = Al) is -1.66. It is the reduction potential of Al (Al3+/Al) that is -1.66, but when Al is acting as anode and getting oxidised to Al3+, the Ecell of Al/Al3+ cell is given to be -1.66. How is it possible to have the samve value of -1.66 for both oxidation and reduction?

Grade:12th pass

2 Answers

Inzamam ul Haq
32 Points
4 years ago
Because Al in one cell act as anode and in other act as cathode so Al has same value but opposite sign
Vikas TU
14149 Points
4 years ago
Dear student 
Please refer the link below 
 
 
Good Luck 
 
cheers 

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