The standard electrode potential corresponding to the reaction `Au^(3+)(aq)+3e^(-)rarrAu(s)` is 1.50 V predict if gold can be dissolved in 1M HCI solutoin and on passing hydrogen gas through god salt solution metallic gold will be precipitated or not

Explanation

Consider the half reaction `2H^(+)(aq)+32e^(-)rarrH_(2)(g),E^(@)=0.0 V`
`Au^(3+)(aq)+3e^(-)rarrAu(s),E^(@)=1.50 V`
since `E^(@)` for `Au^(3+)//Au` is higher than that `H^(+)//1/2 H_(2)(0.0 v)` therefore `Au^(3+)` can be more easily reduced than `H^(+)` ion this implies that `Au^(3+)` ions can be reduced to metallic gold by `H_(2)` gas but `H^(+)` ions cannot oxidise metallic gold to `Au^(3+)` ions in other words metallic gold does not dissolve in 1 M HCI instead `H_(2)` gas can reduce gold salt to metallic gold