题目

阅读理解。 My name is Han Mei. My school is not very big, but it’s very nice. When you come into my school, you can see a tall building. It’s our teaching building. There are fifteen classrooms in the building. It has three floors. There are forty-two teachers and six hundred children in my school. The teachers all work hard, and the students all study hard, too. My school is beautiful. There are lots of pictures on the wall. It’s our school culture(文化). I like my school very much. Do you like it, too? Welcome to my school. 根据短文内容判断正误,正确的某化学兴趣小组为探究SO2的性质,按下图所示装置进行实验。请回答下列问题:(1)装置A中盛放亚硫酸钠的仪器名称是。(2)实验过程中,装置B中产生的现象是 , 这个现象说明SO2具有的性质是。(3)装置C中Na2S溶液在空气中不易保存,时间长了会变浑浊,原因是(用离子方程式表示)。(4)装置D的目的是探究SO2与品红作用的可逆性,请写出实验操作及现象。(5)如果把分液漏斗中的浓硫酸换作浓HNO3 , 对此实验是否有影响(填“是”或“否”),请说明你的理由。(6)工业上用黄铜矿(CuFeS2)冶炼铜,副产品中也有SO2 , 冶炼铜的反应为8CuFeS2 + 21O2 8Cu + 4FeO + 2Fe2O3 + 16SO2 , 若CuFeS2中Fe的化合价为+2,反应中被还原的元素是(填元素符号)。当生成0.8mol铜时,此反应转移的电子数目是。
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