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The standard electrode potential corresp...

The standard electrode potential corresponding to the reaction : `Au^(3+)(aq) +3e^(-) rarrAu(s)` is 1.42 V . Predict (i) if gold can be can be dissolved in 1 M HCl solution and (ii) on passing hydrogen gas through gold solt solution, metallic gold will be precipitated or not .

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The standard reduction potential is greater than zero , therefore , reduced form of gold is more stable than hydrogen . In other words , gold does not dissolve in 1 M HCl solution . On the other hand , if hydrogen gas is passes through the saltsolution of the gold , it will reduce `Au^(3+)` ion and metallic gold will be precipitated .
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