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The standard electrode potential of Au^3...

The standard electrode potential of Au^3+(aq)+3 e- → Au(s) is 1.42 V. Predict if gold can be dissolved in 1M HCl solution and on passing hydrogen gas through gold salt soIution,metallic gold will be precipitated or not.

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`Au^3++3 e^- Au, E^circ=1.42` `` 3/2 H_2 3 H^*+3 e^-, E^circ=0 `` o v e r a l l ~ `3/2 dotH_2+Au^3+ Au_0+3 H^*` `E^a=1.42 ~V` is +ve . HCl can not dissolye Aá.
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