【简答题】白色固体A溶于水后加入盐酸有白色沉淀B生成。用过量SnCl2溶液与B作用,B最后转化为黑色的C。B溶于硝酸生成无色溶液,再加入过量NaOH溶液有黄色沉淀D析出。D不溶于氨水和NaOH溶液,但易溶于硝酸。用HI溶液处理D先有红色沉淀E生成,HI溶液过量则沉淀消失得无色溶液。请写出A~E的化学式。 A B C D E
【简答题】S1:What is your port of registry?S2:My port of registry is Guangzhou.Q:What is asked about?A. Port of destination. B. Port of registry. C. Port of departure. D. Port of calls.