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Given that E^o values of Ag^+//Ag, K^+//...

Given that `E^o` values of `Ag^+//Ag, K^+//K, Mg^(2+)//Mg` and `Cr^(3+) //Cr` are `0.08 V, -2 .93 V, -2 37 V` and ` -0. 74 V` respectively. Therefore the order for the reducing power of the metal is .

A

` Ag gt Cr gt Mg gt K`

B

` Ag lt Cr lt Mg lt K`

C

` Ag gt Cr gt K gt Mg`

D

` Cr gt Ag gt Mg gt K`

Text Solution

Verified by Experts

The correct Answer is:
B
The greater the standard reduction potential, the greater tendency to reducing power of metal. K has greater value
`( - 2. 93)` so `K gt Mg gt Cr gtAg` .
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