用Cl₂生产某些含氯有机物时会产生副产物HCl．利用反应A，可实现氯的循环利用．反应A：

4HCl+O₂ $\begin{array}{l}\underset{\_}{\underset{\_}{CuO/CuC{l}_2}}\\ 400{}^{\circ }C\end{array}$ 2Cl₂+2H₂O

已知：ⅰ．反应A中，4mol HCl被氧化，放出115.6kJ的热量．

ⅱ．

    Once there was a king. He was wise but everyone was afraid of him. His face showed the sadness deep in his heart. So there were deep1lines(皱纹) on his face.

    In his country lived a beautiful girl. Everyone seemed to love her, so did the king. He wanted to2her, and finally he decided to speak to her of his love. After he dressed in his best clothes, he looked in the3,but he saw a hard face,4when he tried to smile.

    How about wearing a mask(面具)?” he thought. Then he ordered his magician to paint a mask that looked kind and happy and handsome. The magician5and said, " But you must keep your own face in the same lines that I paint and be kind to all people from your heart. If not, the mask will break. The mask looked so6that no one knew it was not the true face of the king. Months passed, the beautiful lady7the king, and the king treated everyone8to keep the mask from breaking.

    At last, the king didn't want to cheat his beautiful wife any more.9he asked the magician to take the mask off. Surprisingly, he found his face was just like the mask he had worn10so long!

    This story tells us that a man is what he is in his heart.

材料1．臭氧是淡蓝色气体，大气中的臭氧层能有效阻挡紫外线，保护地球的生存环境，但目前南极出现了臭氧层空洞，并有继续扩大的趋势．

材料2．复印机在工作时，会因高压放电产生一定浓度的臭氧．长期吸入大量臭氧会引起口干舌燥，咳嗽等不适症状，还可能诱发中毒性肺气肿．

材料3．臭氧发生器是在高压电极的作用下将空气中的氧气转化为臭氧（化学式为O₃）的装置．利用臭氧的强氧化性，可将其应用于游泳池、生活用水、污水的杀菌和消毒．