Write the half - cell and the overall ce...

Write the half - cell and the overall cell reaction for the electrochemical cell : `Sn|Sn^(2+)||Au^(3+)|Au`

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The half - cell reaction are : `3Sn rarr 3Sn^(2+) +6e` and `2Au^(3+)+6e rarr 2Au.` The overall reaction is : `3Sn+2Au^(3+)rarr 3Sn^(2+)+2Au.`

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The two half - cell reactions of an electrochemical cell is given as - Ag^(+)+e rarr Ag, E_(Ag^(+)|Ag)^(@)=-0.3995V Fe^(2+)rarr Fe^(3+)+e, E_(Fe^(3+)|Fe^(2+))^(@)=-0.7120V The value of cell Ecell will be -

`-0.3125V`

`0.3125V`

`1.114V`

`-1.114V`