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【简答题】
下面是有关物质的转化关系图(有些物质己省略)，其中A为单质，E在常温下为液体，D是一种含氧的化合物，请回答相关问题。 (1)若C的式量为78，则对C的结构、性质推断中不正确的是_____ A．久置于空气中会变成白色 B．具有强的氧化性 C．晶体存在离子键与非极性键 D．与湿润的紫色石蕊试纸接触时，只能使试纸变蓝色 (2)A的原子结构简图______________，H的电子式___________，E的结构式_________ (3)若C也是含氧化合物且氧为 18 O时，写出C与D反应的方程式___________________ _______________，另一产物(D以外)的摩尔质量为______。 (4)当A量较，I不可能是____________ A．H 2 O    B．NaCl(aq)      C．NaOH(aq)    D．CuCl 2 (5)若没有E在常温下为无色液体的限制，则E、I还可分别是_________、_________(填物质名称)
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