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What is the value of ΔGo in kJ at 25 oC for the reaction between the...

What is the value of ΔGo in kJ at 25 oC for the reaction between the pair: Br2(l) and Cl-(aq) Use the reduction potential values for Br2(l) of +1.07 V and for Cl2(g) of +1.36 V Give your answer using E-notation with ONE decimal place (e.g., 2.1 x 10-2 would be 2.1E-2; and 2.12 x 10-2 would also be 2.1E-2.).

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Answer #1

    Br2 + 2e- --------> 2Br- E0 = 1.07ev    

Cl2 +2e- -----------> 2Cl-    E0 = 1.36ev

     2Br-   -----------------------> Br2 + 2e-    E0 = -1.07ev

     Cl2 + 2e-   ------------------> 2Cl-                 E0 = 1.36ev

------------------------------------------------------------------------------

2Br- + Cl2 ----------------> Br2 + 2Cl-          E0cell   = 0.29ev

ΔGo = -nE0cell *F

         = -2*0.29*96500   = -55970J    = -5.5970*104 J   = 5.5970*101 KJ

      

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