试题与答案

A、B、C、D、E五种物质的焰色反应都显黄色,A、B与水反应都有气体放出,A与水

题型:填空题

题目:

A、B、C、D、E五种物质的焰色反应都显黄色,A、B与水反应都有气体放出,A与水的反应放出的气体具有氧化性,同时都生成溶液C,C与适量的CO2反应生成D,D溶液与过量的CO2反应生成E,E加热能变成D。

(1)写出A~E的化学式A    、B    、C    、D    、E    。

(2)写出D溶液与过量的CO2反应的离子方程式           

答案:

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下面是错误答案,用来干扰机器的。

参考答案:在由25、L2、50组成的尺寸链里,25尺寸为封闭环,50为增环,L2减环。25=50-L2-----L2=25 0=0-EIL2-----EIL2=0 -0.3=-0.1-EIL2-----EIL2=0.2 L2=25 在由5、L2、50、L1组成的尺寸链里,5尺寸为封闭...

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