1.

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)` isA. 2.03 VB. `-2.03 V`C. `+ 2.71 V`D. `-2.71 V`

Answer» Correct Answer - C
`E_(cell)^(@)=E_("Cathode")^(@)-E_("Anode")^(@)`
`=E_("Reduced species")^(@)-E_("Oxidised species")^(@)`
`=0.34-(-2.37)=+2.71 V`


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