您所在的当前位置：高中化学试题 >

氧化剂和还原剂

> 关于3Cl 2 + 6KOH KClO 3 + 5KCl + 3H 2O反应，以下说法正确的是 [ ] A．Cl 2是氧化剂，KOH是还原剂 B．被氧化的氯元素的质量为被还原的氯元素质量的5倍 C．3mol氯气参加反应转移10mol电子 D．KOH既不是氧化剂，又不是还原剂

问题：

发布时间：2024-09-12

关于3Cl ₂ + 6KOH KClO ₃ + 5KCl + 3H ₂O反应，以下说法正确的是
[ ]
A．Cl ₂是氧化剂，KOH是还原剂
B．被氧化的氯元素的质量为被还原的氯元素质量的5倍
C．3mol氯气参加反应转移10mol电子
D．KOH既不是氧化剂，又不是还原剂

参考答案：

提问用户：lz***vmM

可能感兴趣的题目：

1 一根容易形变的弹性导线，两端固定，导线中通有电流，方向如图中箭头所示。当没有磁场时，导线呈直线状态；当分别加上方向竖直向上、水平向右或垂直于纸面向外的匀强磁场时，描述导线状态的四个图示中正确的是 [ ] A． B． C． D．
2 法国启蒙思想家伏尔泰说：“如果全部自然界，一切行星，都要服从永恒的定律，而有一个小动物，五尺来高，却可以不把这些定律放在眼中，完全任意地为所欲为，那就太奇怪了。”这段材料表明启蒙运动的兴起和发展 [ ] A．在自然科学的直接指导下进行 B．有利于自然科学的确立与发展 C．符合自然界存在的永恒定律 D．受到近代自然科学成就的影响
3 从世界民主发展史的角度分析，巴黎公社和十月革命的积极意义在于 [ ] A．完善了民主的形式 B．强调了政府作用 C．运用了革命的手段 D．扩大了民主的主体
4 北京水资源短缺的自然原因是 A.污染严重 B.人口增加，生活用水增加 C.经济发展，工农业用水增加 D.降水少且季节变化和年际变化大
5 水，溶液无色。因此可知原溶液中 A．肯定不含I- B．肯定不含Cl- C．肯定含Fe3+
6 It is nice to do something for someone else out of the blue and not to expect anything ______. A．in relief B．in return C．in turn D．in need
7 Shaping the Future of TV Nobody can predict the future of TV with any certainty but some major figures in the industry have recently put forward their thoughts on what will shape TV of the future. The shaping of a personalized television future is starting to take place, says Intel. The chip giant, who makes the processors found in most personal computers, states that by 2015 there will be just over 12 million devices using IPTV services that will be capable of connecting to over 500 billion hours of TV & video. This supports the idea to make television a more social, personalized and readily accessible device available anywhere through IPTV services. As more and more people consume TV & video through various mediums, there is now a greater need to distribute and manage this content. As such, companies like TV Genius are accepting this announcement made at Intel’s Developer Forum (IDF) in the USA by their chief technology officer, Justin Rattner. With such a variety of content likely to become available, technology firms will need to assist in making personalized TV recommendations more readily accessible. Mr. Rattner, speaking to the BBC said, “TV will remain at the centre of our lives and you will be able to watch what you want and where you want. We are talking about more than one TV-capable device for every man and woman on the planet. People are going to feel connected to the screen in ways they haven’t in the past.” One way in which this will happen will also be assisted by a more united service of material combining including video content, internet content, broadcast content, and personal content. This content will become much more accessible through remote devices like mobile phones using IPTV technology. This means that users will be able to watch their favorite programs away from the traditional media hub, the home. 63. The author uses the passage mainly to ________. A. recommend a new type of TV B. introduce a possible shape of future TV C. describe the function of future TV D. support the new type of TV 64. We know from the passage that the future TV might have major features like _______. a. being capable of connecting to many more hours b. changing the shape very easily c. receiving programs at any place d. displaying the advanced materials e. using services accessing the Internet, video, radio, etc A. a, b, c B. c, d, e C. a, c, e D. b, c, e 65. The underlined word “ this” in the third paragraph refers to __________. A. Intel, the chip giant B. TV and video C. readily accessible device D. Widely used IPTV services 66. We can infer from the passage that _________. A. the present TV will disappear in the near future B. the future TV will have a beautiful look C. people are developing the technology of TV very quickly D. people will spend more time watching TV at home
8 如图所示，一个与平台连接的足够长斜坡倾角θ=arcsin（1/30），一辆卡车的质量为1t．关闭发动机，卡车从静止开始沿斜坡滑下，最大速度可达120km/h，已知卡车运动过程中所受外界阻力与速度成正比，即f=kv．那么比例系数k=______N•s/m，当卡车以恒定功率P沿斜坡向上行驶，达到的最大速度可以为54km/h，当卡车开上平台后，继续保持此恒定功率行驶40s，重新匀速行驶，则卡车开上平台后到匀速行驶的过程中克服阻力所做的功W=______J．（g=10m/s 2）
9 Women had no equal ______ in the past. [ ] A. say B. speak C. talk D. word
10 伽利略对自由落体的研究，开创了研究自然规律的科学方法，这就是 A．对自然现象进行总结归纳的方法 B．用科学实验进行探究的方法 C．对自然现象进行总结归纳，并用实验进行验证的方法 D．逻辑推导、抽象思维、提出猜想与假说、数学推导和科学实验相结合的方法