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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)`A. 0.74 VB. 1.14 VC. 0.34 VD. `-0.34 V` |
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Answer» Correct Answer - C `E_"cell"^@=E_"cathode"^@-E_"anode"^@` `E_"cell"^@=E_(Cd^(2+)//Cd)^@-E_(Cr^(3+)//Cr)^@` =-0.40-(-0.74)=+0.34 V |
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