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 1.25 V ? Express your answer using two significant figures.
[Au3+] = ____M
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The cell potential of the following electrochemical cell depends on the gold concentration in the cathode...