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Standard electrode potential for Sn^(4+)...

Standard electrode potential for `Sn^(4+)//Sn^(2+)` couple is `0.15 V` and that for the `Cr^(3+)//Cr` couple is `-0.74 V`. These two couples in their standard state are connected to make a cell. The cell potential will be

A

`+1.19` V

B

`+0.89` V

C

`+0.18` V

D

` + 1.83` V

Text Solution

Verified by Experts

The correct Answer is:
B
`E_(cell)^(@) = E_("cathode")^(@) - E_("anode")^(@)`
`0.15 - (0.74) = 0.15 + 0.74 = 0.89V`
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