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Consider the cell reaction : Mg(s)+Cu^...

Consider the cell reaction `:`
`Mg(s)+Cu^(2+)(aq) rarr Cu(s) +Mg^(2+)(aq)`
If `E^(c-)._(Mg^(2+)|Mg(s))` and `E^(c-)._(Cu^(2+)|Cu(s))` are `-2.37` and `0.34V`, respectively. `E^(c-)._(cell)` is

A

`2.03V`

B

`-2.03V`

C

`-2.17 V`

D

`2.71 V`

Text Solution

Verified by Experts

The correct Answer is:
d
The cell is represented as `:`
`Mg(s)|Mg^(2+)||Cu^(2+)|Cu(s)`
`E^(c-)._(cell)=(E^(c-)._(red))_(c)-(E^(c-)._(red))_(a)=0.34-(-2.37)=2.71V`
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