题目

（5分）氯气是一种重要的化工原料，在生产和生活中应用十分广泛。 已知：2KMnO4+16HCl（浓）=2KCl+2MnCl2+5Cl2↑+8H2O ，所以在实验室可用高锰酸钾固体和浓盐酸制氯气。      （1）仪器①的名称         。请为该反应选择合适的发生装置      。（填A或B） （2）在上述反应中，氧化剂是                  。 （3）当集气瓶中收集满氯气时，可以观察到气体呈             色。 （4）工业上电解饱和食盐水制取氯气的化学方程式：    �With the 【1】__________ （develop）of industry, air pollution is getting more and more serious. In Beijing, many people suffer different kinds of illnesses because 【2】_________ air pollution. Air pollution is caused by the following【3】_________: about half of the problem is caused by vehicles. There are more and more cars, buses on the roads, and they give off 【4】_________( poison) gases. 25% of air pollution is caused by factories. Another factor is the smokers. Smoking not only does harm to their health 【5】________ to others. 【6】_________ these, about 10% of air pollution is caused by other reasons. We should take some measures to fight 【7】_________ pollution. New fuel can be used to take 【8】_________ place of gas. We can plant more trees. If everybody realizes the 【9】________（important）of environment and does something to stop pollution, the problem will【10】__________（solve）.