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The cell reaction of a cell is Mg(s)+C...

The cell reaction of a cell is
`Mg(s)+Cu^(2+)(aq)rarrCu(s)+Mg^(2+)(aq)`
if the standard reduction potential of Mg and Cu are -2.37 V and +0.34 V respectively The emf of the cell is

A

3.30 V

B

`-3.30 v`

C

`+2.71 V`

D

`-2.71 V`

Text Solution

Verified by Experts

The correct Answer is:
C
`E_("Cell")^(@)=E_("Cathode")^(@)-E_("anode")^(@)=E_("reduced species")^(@)-E_("oxidised species")^(@)`
`=0.34 -(-2.37 )=+2.71 V`
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