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Calculate the standard cell potential of...

Calculate the standard cell potential of galvanic cell in which the following reaction takes place
`2Cr_(s)+3Cd_(aq)^(+2)rarr2cr_(aq)^(+3)+3Cd_(s)`
Given `E_(Cr^(+3)//Cr)=-0.74(V)E^(@)_(Cd^(+2)//Cd)=-0.04(V)`

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Verified by Experts

The correct Answer is:
0.34 V , `-196.86 kJ mol^(-1)`
`E_(cell)^(Theta) = E_((Cd^(2+)|Cd))^(Theta) - E_((Cr^(3+) |Cr))^(Theta)`
`= - 0.40 - (-0.74) = + 0.34 V `
`Delta G^(Theta) = - n FE^(Theta)`
`= - 6 xx (96500 C mol^(-1)) xx (0.34 V)`
`= - 196.86 kJ mol^(-1)`
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