Giventhe reduction potentials for several species, choose the one thatis the bes

Question

Giventhe reduction potentials for several species, choose the one thatis the best oxidizing agent.

           A.           Au3+   +  3e-   ->    Au                                 E°     =     1.5V

           B.           Br2     +   2e-   ->   2Br-                          E°    =     1.07 V

           C.           2 H+   +   2e-   ->    H2                                 E°     =     0.00 V

           D.           Cd2+   +   2e-   ->   Cd                                 E°     =     -0.40V

           E.           Cr3+    +  3e-   ->    Cr                                 E°     =     -0.74V

Explanation / Answer

The best oxidizing agent will be A(Au3+   +  3e-   ->     Au) because if youlook on the Tableof selected Standard Electrode Potentials, thehalf reaction for gold is the highest on the left hand side of thetable. Another reason that A is the strongest oxidizing agent isthat it has the higher electrical potential! Hope this helps. If you need more explanation just ask. -PilsnerPrincess

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