题目

A flock of wild mandarin ducks(鸳鸯) are the biggest draw in the West Lake scenic area in Hangzhou, capital of East China's Zhejiang province, with tourists flocking from around the country to see them. However, some of the tourists have been feeding the ducks, even pulling them by the neck to force-feed them. On Monday, a video claiming that some of the ducks had died from over-feeding went viral on social networking sites.Although there are prominent signboards warning people against feeding them, tourists just cannot hold back. Some even believe the ducks are underfed and they are doing t下列物质均为常见物质或它们的溶液，其中A为淡黄色固休，C、X均为无色气体，Z为浅绿色溶液，D为一种常见的强碱．根据它们之间的转化关系（如图），用化学用语回答问题。（部分产物已省略）（1）写出下列物质的化学式：A_______ D__________（2）A与SO3（g）的反应类似于A与X的反应，请写出A与SO3（g）反应的化学方程式并标出该反应电子转移的方向和数目：____________________________________。（3）物质E转化为物质F的现象为___________________________________________，化学方程式为____________________________________________。（4）向含10gD的溶液中通入一定量的X，完全反应后，在低温条件下蒸发结晶，最终得到14.8g固体。所得固体中含有的物质及其物质的量之比为_____________。 （表达示例：n(A)︰n(B)=a︰b）；简述蒸发结晶在低温条件下进行的理由：___________（用必要文字回答）