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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

`E_(cell)^(Theta) E_(("cathode"))^(Theta) - E_((anode))^(Theta)`
`-0.40 - (- 0.74) = + 0.34 V`
`Delta_(r) G^(Theta) = - n FE_(cell)^(Theta)`
`= - 6 xx 96500 xx 0.34`
`= -196860 CV mol^(-1)`
`= -196860 J mol^(-1)`
`= - 196.86 kJ mol^(-1)`
log `K_(c)= (n E_(cell)^(Theta))/(0.059)`
`= ( 6 xx 0.34)/(0.059) = 34.576`
`K_(c) = 3.76 xx 10^(34)`
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