The cell potential of the following electrochemical cell depends on the gold concentration in the cathode...

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The cell potential of the following electrochemical cell depends on the gold concentration in the cathode...

The cell potential of the following electrochemical cell depends on the gold concentration in the cathode half-cell: Pt(s)|H2(g,1atm)|H+(aq,1.0M)||Au3+(aq,?M)|Au(s). What is the concentration of Au3+ in the solution if Ecell is 1.26 V ?

To what pH should you adjust a standard hydrogen electrode to get an electrode potential of -0.117 V ? (Assume that the partial pressure of hydrogen gas remains at 1 atm.)

Express your answer using two decimal places.

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