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 .

The standard electrode potential corresponding to the reaction : Au^(3

1.	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 .
Answer» Solution :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 .