题目

向100 mL FeCl2溶液中滴入含Br20.05 mol的溴水，测得加入的溴已完全反应，形成的溶液不含Fe2+，则原FeCl2溶液的物质的量浓度为 A.0.5 mol/L            B.1 mol/L              C.1.5 mol/L              D.2 mol/L 答案：B  解析：由关系式Fe2+—Br2知c（FeCl2）×100×10-3 mol∶0.05 mol=2∶1,即c(FeCl2)=1 mol/L。 -- He was so angry at _______she was doing _______he walked out and closed the door heavily behind him. --I am sorry to hear that. A．what; thatB．that; whatC．that; thatD．what; what