摘要:1.已知X是淡黄色固体.A.B是盐.其焰色反应呈黄色.C是硫酸盐.D.E是无色气体.A.B.C.D.X之间的转化关系如下: (1)A+H2SO4B+H2SO4→C+E↑+H2O, (3)D+E→X+H2O, (4)B+O2→C, (5)X+NaOH→A+B+H2O 试推断化学式:A________.B_______.C________. D________.E_______.X________.

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