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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

`2.71` V

B

2.30 V

C

2.80 V

D

1.46 V

Text Solution

Verified by Experts

The correct Answer is:
A
`E_("cell")^(@) = E_(RP_(Cu))^(@) - E_(RP_(Mg))^(@)`
`2.37 - (-0.34) = 2.71` V
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