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A-G及X、Y均是中学化学常见物质,其中B、D、E、F、G在常温下为气体且B为红棕色,C是红色的金属单质。它们之间有如下转化关系(其中反应③④⑦的产物中的水已略去)。试填空 (1)B的化学式________。 (2)反应⑤中氧化剂与还原剂的物质的量之比为 。 (3)写出反应⑦的离子方程式_____________________。 (4)写出电解X溶液的阳极反应式______________________;若电解一段时间后转移了0.2mol电子,则此时电解产生的气体在标准状况下的体积为 。 (5)写出反应④的化学方程式______________________。
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