试题与答案

(16分)下图是中学常见物质间的转化关系。已知: a.A为淡黄色固体,B为导致“

题型:填空题

题目:

(16分)下图是中学常见物质间的转化关系。已知:

a.A为淡黄色固体,B为导致“温室效应”的主要物质;

b.E为常见金属,J为红褐色沉淀;

c.G在实验室中常用于检验B的存在;

d.L是一种重要的工业原料,常用于制造炸药,浓溶液若保存不当常呈黄色。

回答下列问题:

(1)A的电子式为            ;B分子属于      分子(极性、非极性);

(2)反应①的化学方程式为                                           

反应②的离子方程式为                                           

(3)若参加反应的A的质量为39g,则消耗CO2的体积(标况下)为          L。

(4)检验K中阳离子常用的方法是                                      

(5)L浓溶液的保存方法是                                               

答案:

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参考答案:A

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