The tourists will find the guide book is of even ________ practical value than they thought, as it shows different routes to the places they are going to.
【简答题】于 0.10 mol/L Fe 3+ 和 0.25 mol/L HCl 混合溶液中,通入 H 2 S 气体使之达到平衡,求此时 Fe 3+ 的浓度 。已知 H 2 S 饱和溶液的浓度为 0.10 mol/L , E y ( S/ H 2 S ) =0.141V , E y ( Fe 3+ / Fe 2+ ) =0.71V 。