某些化学反应可用下式表示 ：A + B ─→ C + D + H2O 请回答下列问题：
（1）若A、C、D均含有氯元素，且A的化合价介于C与D之间，
写出该反应的离子方程式： 。
（2）若C为氯化钠，D能使澄清石灰水变浑浊的无味气体，则A与B的组合是： 。
（3）若A为红色金属单质，B为第二周期某种元素的最高价氧化物的水化物，
（Ⅰ）当C为无色气体时，相应的化学方程式为 。
（Ⅱ）当C为红棕色气体时，氧化剂与还原剂的物质的量之
比为 ，
每生成标准状况下11.2L的该气体，转移电子的数目约为
（4）若C、D均为气体且都能使澄清石灰水变浑浊，则A与B的组合是 。
（5）当C为可以使湿润的红色石蕊试纸变蓝的气体时，实验室进行该气体的尾气处理， 应选用下列 装置（填序号）
(5) b
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| Today the problem of environment has become more and more serious. Every day, every hour, the air, forests, soil, oceans and fresh 1 are becoming dirtier and dirtier. There are two 2 for the problem: the excessive (过度) use of natural resources and pouring a lot of 3 waste in the course of production. Yet, man 4 great progress in environmental protection. Scientists and inventors are trying to develop 5 engines for automobiles. Governments of many countries have made 6 to protect the natural resources. More and more people have realized the importance of environmental protection and are doing what they can to protect our surroundings. Still more ways 7 to solve the problem. People should be educated in 8 modern methods to protect the environment and learn to make clever use of recycling our natural resources. The government of all 9 should take ways to fight against pollution _ 10 _ protecting the environment is not only protecting our home but also the civilization (文明) of the humankind. | |||
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